The trick to momocote is to STRETCH it as tight as you can in all directions, don't just lay it on a surface and iron it down. iron a spot in the middle of the leading edge, then PULL the monocote tight and tack the end of the leading edge, and do the same to the other side- keep doint this to all edges- little tacks and stretch and smooth as much of the wrinkles out as you can. You can reposition the tacks as you stretch out the covering, and once you get it all stretched out as much as you can, you can iron down the seams, and then progress to other areas like the rib caps and so on. I don't iron the whole thing down, just the edges and keep everything as tight as possible. Then , just go over lightly with a heat gun to tighten it up tight as a drum. lots of other tricks on applying this stuff, but with practice you can get a covering job to look like you painted it on.