>>1 not trying not trying to advertise it or anything, but there is a computer program that might help you called "ComiPo" manga creation software, which uses 3D manga characters and 3D objects.
Link from Crunchyroll -
http://www.crunchyroll.co.uk/comipo
Think it was made for people who have good writing skills but not that good at drawing, I saw it on NHK world a little over a few months back, and I thought it was cool idea.