I'm try use
<animations:AnimationCollection x:Name="UnHoverCollection">
<animations:Vector2Animation To="10,10" Target="Margin" />
</animations:AnimationCollection>
and this animations
<animations:AnimationCollection x:Name="UnHoverCollection">
<animations:Vector4Animation To="10,10,10,10" Target="Margin" />
</animations:AnimationCollection>
and take next error
"The specified property was not found or cannot be animated. Context: Margin Expression: Margin Start Position: 0, End Position: 6"
How do this animation?
If you want to move the object, animating the margin is not a good idea. These animation types are mainly operated according to X, Y coordinate. I suggest that you can use TranslationAnimation or OffsetAnimations. You can refer to this document to move the object.