The Canvas.ZIndex is based on a number starting with 0 being the farthest back
<UserControl x:Class='SilverlightApplication3.MainPage' xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' xmlns:d='http://schemas.microsoft.com/expression/blend/2008' xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' mc:Ignorable='d' d:DesignWidth='640' d:DesignHeight='480'> <Canvas> <Image Source="iamge.jpg" Canvas.ZIndex="1" Height="200" Width="200" Canvas.Top="50" Canvas.Left="50"/> <Image Source="iamge.jpg" Canvas.ZIndex="0" Height="200" Width="200"/> </Canvas> </UserControl>