body kit installation

I just got my body kit! Yeah! well anyway... anyone ever install their body kit themselves?

I tried fitting them on cause my other friends who bought body kits too (team discount $$) tried them on and theirs didn't fit right (yeah fiberglass fits like sh''t). well anyway I got lucky and my front and rear bumper fit pretty damn nicely. Im scared to drill holes though so all I can do is stare .
Is it worth the money to get them installed by someone else?