Bumper help. PLEASE!!!!

I'm putting my car back together. I have modified the fiberglass piece to fit around the intercooler and everything was good untill I tried to fit the bumper back on. When I attach it on the front then go to either side and try to attach it there I get a big pucker where it turns around each side.
Am I doing something wrong? Please help.

pictures? you got to be carefull when adding fiber glass because as it cures it will heat and possibly warp. did you do this on the car or off?

I Can't figure out how to post pics. I'm not a very computer friendly person. If you can tell me how I'll try again.
The fiber glass inner bumper is ok, I have it modified and it is back on. The problem is in the outer bumper or air dam. I have'nt done anything to it.