I would use brown, grey, and black camo pattern to break up the silouette. You can purchase a stencil set from a fabric or arts supply store.I would use flat black on the exterior as well all flat paints would be best. I have see people glue straw like material to the bottom to give it some depth, besure to spray it to kill the scent. Good Luck, send some pictures when it is all done.

JMO