Last one to post in this thread wins!

Don't mind telling you guys of my screw ups because your more a help than an ***.
The last spoiler I made stuck to the mold and I had to chisel it off and the mold is gone. I saved the spoiler and just joined a group of people that I'm hoping can tell me what I did wrong. This whole making fiberglass parts is costing me more time than I like. I won't give up yet I just need some help.