Of the four, this one is the one I chose the most because the direction of the shadows and the background seemed to fit perfectly.
The right foot looks like it's not touching the ground, but if you interpret that as meaning the character is in the middle of a movement, that's fine too.
But seriously, dioramas are amazing. They're really impressive!
If you tried to do this in a diorama, it would be incredible.

I tried making a saber diorama at the gym. | 八丸's Gunpla works