Cosplay help and tip making my first cosplay by hand and need tips on fiberglass and paint

Not until it and around the time for AX Im keeping it top secret because If I release any picture of it there would be try people coping it and saying its theirs Im getting friends to take picture and water ink to make sure because the reason im doing its a very special Spartan Armor Im making so until I can Picture water ink and set the site to prove its my i realease some pic on this site the reason Im doing this because some ex friends that stole tons of my cosplaying ideas so I dont want them stealing this one but I promise I will ppst picture of it when its done and have water marks all over it Im working with some other top cosplayer to get portected as much as it can