At the moment I'm working on making a Mk VI Iron Man costume using EVA foam and Stealth's tutorials. However, the foam roll which I purchased has a corrugated pattern on the top. While I figured I would use the other side, the fact that it was in a roll means the corrugated pattern left an imprint on the back side as well.
Any ideas to how I could resolve this?

Any ideas to how I could resolve this?