Box perspective

I find myself a good way into the process of making my hopping box in perspective. Having begun by drawing out my grid and "tracks" which my box will follow (though not on the ground),

 I proceeded to map out the jump's arc for the front and back bottom edges. I used these to map out each frame of the jump. I found, in the first test, that it lacked ease-in and out, so I added that in a bit more for the second test. Ahead is the addition of squash and stretch et. al.