redoing my door panels HELP!

so me and my gf tore off the old nasty 1 and spray glued the whole side and rolling pinned it on and it was blk vynal tough stuff then me cut around and cut some sides and glued that back the glue dosnt like to hold tight so (duct tape saves the day again)so we put a couple strips of tape on and pulled tight and let sit im hoping it will turn out better then torn and gross.anyways if anyolne has ne inputs on helping me plz do not hold back but im not paying 700 dollars for 4 door panels i bought the vynal for 4 yards for 36$