you can create a button from the Simple Style and modify it. just try this, i don't know whether it will suite you. sorry for the long answer(if it didn't suite your case)
<!-- SimpleStyles.XAML defines a set of control styles which are simplified starting points for creating your own controls -->
<!-- Brushes : These are used to define the color for background, foreground, selection, enabled etc of all controls
If you want to change the color of a control you can just chnage the brush; if you want to add a new shape or change arrangement then also edit the template -->
<!-- NormalBrush is used as the Background for SimpleButton, SimpleRepeatButton -->
<LinearGradientBrush x:Key="NormalBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#EEE" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="NormalBorderBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#CCC" Offset="0.0"/>
<GradientStop Color="#444" Offset="1.0"/>
</LinearGradientBrush>
<!-- LightBrush is used for content areas such as Menu, Tab Control background -->
<LinearGradientBrush x:Key="LightBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="1.0"/>
</LinearGradientBrush>
<!-- MouseOverBrush is used for MouseOver in Button, Radio Button, CheckBox -->
<LinearGradientBrush x:Key="MouseOverBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#AAA" Offset="1.0"/>
</LinearGradientBrush>
<!-- PressedBrush is used for Pressed in Button, Radio Button, CheckBox -->
<LinearGradientBrush x:Key="PressedBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#BBB" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="0.1"/>
<GradientStop Color="#EEE" Offset="0.9"/>
<GradientStop Color="#FFF" Offset="1.0"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="PressedBorderBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#444" Offset="0.0"/>
<GradientStop Color="#888" Offset="1.0"/>
</LinearGradientBrush>
<!-- SelectedBackgroundBrush is used for the Selected item in ListBoxItem, ComboBoxItem-->
<SolidColorBrush x:Key="SelectedBackgroundBrush" Color="#DDD"/>
<!-- Disabled Brushes are used for the Disabled look of each control -->
<SolidColorBrush x:Key="DisabledForegroundBrush" Color="#888"/>
<SolidColorBrush x:Key="DisabledBackgroundBrush" Color="#EEE"/>
<SolidColorBrush x:Key="DisabledBorderBrush" Color="#AAA"/>
<!-- Used for background of ScrollViewer, TreeView, ListBox, Expander, TextBox, Tab Control -->
<SolidColorBrush x:Key="WindowBackgroundBrush" Color="#FFF"/>
<!-- DefaultedBorderBrush is used to show KeyBoardFocus -->
<LinearGradientBrush x:Key="DefaultedBorderBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#777" Offset="0.0"/>
<GradientStop Color="#000" Offset="1.0"/>
</LinearGradientBrush>
<SolidColorBrush x:Key="SolidBorderBrush" Color="#888"/>
<SolidColorBrush x:Key="LightBorderBrush" Color="#AAA"/>
<SolidColorBrush x:Key="LightColorBrush" Color="#DDD"/>
<!-- Used for Checkmark, Radio button, TreeViewItem, Expander ToggleButton glyphs -->
<SolidColorBrush x:Key="GlyphBrush" Color="#444"/>
<!-- Style and Template pairs are used to define each control Part -->
<!-- The Style provides default values on the control; the Template gives the elements for each control -->
<!-- SimpleButtonFocusVisual is used to show keyboard focus around a SimpleButton control -->
<Style x:Key="SimpleButtonFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Border>
<Rectangle Margin="2" Stroke="#60000000" StrokeThickness="1" StrokeDashArray="1 2"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- Simple Button - This control sets brushes on each state. Note that these brushes must be listed above since they are static resources -->
<Style TargetType="{x:Type Local:MyButton}">
<Setter Property="FocusVisualStyle" Value="{DynamicResource SimpleButtonFocusVisual}"/>
<Setter Property="Background" Value="{DynamicResource NormalBrush}"/>
<Setter Property="BorderBrush" Value="{DynamicResource NormalBorderBrush}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Local:MyButton}">
<!-- We use Grid as a root because it is easy to add more elements to customize the button -->
<Grid x:Name="Grid">
<Border x:Name="Border" CornerRadius="3" Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Padding="{TemplateBinding Padding}"/>
<!-- Content Presenter is where the text content etc is placed by the control -->
<!-- The bindings are useful so that the control can be parameterized without editing the template -->
<StackPanel Height="Auto" Orientation="Horizontal">
<Image Source="{TemplateBinding ImageSource}" Width="24" Height="24" Stretch="Fill"/>
<TextBlock Text="{TemplateBinding Content}" HorizontalAlignment="Left" Foreground="{DynamicResource TaskButtonTextBrush}" FontWeight="Bold" Margin="5,0,0,0" VerticalAlignment="Center" FontSize="12" />
</StackPanel>
</Grid>
<!--Each state sets a brush on the Border in the template -->
<ControlTemplate.Triggers>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter Property="BorderBrush" Value="{DynamicResource DefaultedBorderBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" Value="{DynamicResource MouseOverBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" Value="{DynamicResource PressedBrush}" TargetName="Border"/>
<Setter Property="BorderBrush" Value="{DynamicResource PressedBorderBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsEnabled" Value="true"/>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" Value="{DynamicResource DisabledBackgroundBrush}" TargetName="Border"/>
<Setter Property="BorderBrush" Value="{DynamicResource DisabledBorderBrush}" TargetName="Border"/>
<Setter Property="Foreground" Value="{DynamicResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!--<Style TargetType="{x:Type Local:MyButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Local:MyButton}">
<StackPanel Height="Auto" Orientation="Horizontal">
<Image Source="{TemplateBinding ImageSource}" Width="24" Height="24" Stretch="Fill"/>
<TextBlock Text="{TemplateBinding Content}" HorizontalAlignment="Left" Foreground="{DynamicResource TaskButtonTextBrush}" FontWeight="Bold" Margin="5,0,0,0" VerticalAlignment="Center" FontSize="12" />
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>-->
<Grid>
<Local:MyButton ImageSource="/WpfApplication1;component/MoveRight.png" Margin="33,101,131,127">
Kishore
</Local:MyButton>
</Grid>