Nick,
I too am just starting and nervous as heck about doing this. I work in law enforcement and testify in court cases and all that stuff and that doesn't make me half as nervous as building my armor. That said, will this stop me or discourage me? Absolutely NOT!
If your worries stem from being a perfectionist (as I am) get over it. Take a look at some of the original movie props they used and get a good laugh. You'll see how far from perfect they were.
Remember, this is meant to be fun not stressful.
If you need any help ask in the forums or even PM me. I might not have the experience but have been doing a ton of research (about 200 pages of notes) and am a newbie just like you.
Damn the torpedoes! Full steam ahead!