You really LOVE Evangelion!
Well, before creating other movie, do yourself a favour and play a lot with photoshop's "fusion options", that will give you a lot of ideas about giving 3D and perspective to your drawings.
You can to 'calcate' (I don't know if this is the word) any images of the EVA and Sachiel, but warn, I don't mean "cut and copy", but import it a background and redraw it in a new layer, using the original as a guide.
And, for Ideaki Anno Sake, work the backgrounds!