Editing a Slider's Thumb Template to be an Image Windows Phone 7

So I've been looking up a lot of "custom sliders" through google from all the major sources such as windowsphonegeek, msdn etc. But for some reason I can't seem to figure out how to make the thumb of the slider an image (a png for example).

Here is a little bit of xaml where the problem lies

    <Control.Template Name="ThumbTemplate1" TargetType="Thumb">
        <Image Source="myImage.png" Height="48" Width="48" />
    </Control.Template>

At the moment this will not show any thumb since it isn't loading the image properly.

     <Style x:Key="ThumbStyle1" TargetType="Thumb">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Thumb">
                    <Grid Margin="0,-15,-70,-8">
                        <Ellipse Fill="{Binding ThumbImage}" Stretch="UniformToFill"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

Its important to set the fill the ellipse/rectangle etc this way if you want the binding for the image since binding image brushes is very problematic, this take care of some of the hassle

Have you checked the path to the image (by diplaying it outside your template)?

Ensure the image file has a build action of "Content" (the default is "Resource") and ensure you start the name with a "/".