Edit: Just started looking at the WelshWarrior videos and his video #13 shows how I stenciled my armor below (albeit on a helmet). I didn't know about those till I just saw them mentioned in a thread, and he's a pro! I forgot to mention that I could not easily skew Rafal Fetts templates to work with RKDs armor, which is why I make my own outline of the armor. Again, I'm sure there are more intelligent ways to go about this process.
Okay guys I've had good luck with this since learning a little patience for it. Here's what I got for my right breast plate as it stands...
Now I know it's not the best, but I'm happy with how far I've gotten it as an extreme novice. This is also after having repainted several times. The first was because I didn't like the silver and needed to make my edges better. The second was because I ruined my paint job with inaccurate yellow and invisible liquid mask.
In case any other novices are looking for how things might be done (since I had a bit of trouble finding definitives on here):
I switched from a liquid mask to using cheap Ultrabrite toothpaste and a toothpick and had much better luck. I wasn't able to see the liquid mask under my initial yellow.
I tried using Rustoleum Sun Yellow... DON'T! Far too light. Try your hardest to find the Rustoleum Line Painting Yellow because it is perfect.
As for getting the pattern onto the pieces: I got a semi-round object to match the contour of the rear side of the breast plates, one I found something that was a decent base for it, I slid a plain white piece of paper in between the two and traced the armor piece. After that, I cut out the shape it had given me and traced the shape onto tracing paper. So, after that, I went to RafalFetts templates and traced some of the details straight from the computer screen. I also went to the Magic of Myth gallery and added/changed details as I saw fit. Now for the best part (I initially tried the method of drawing heavily on the rear of the tracing paper, flipping it over, and using the end of a paint brush to push the graphite onto the armor. Talk about the poor-mans graphite paper) Cut out your finished tracing paper stencil and loosely tape it to the front of the armor at the top and bottom. Now slide a small piece of graphite paper between the stencil and the armor and trace each of your details. I used the writing tip of a mechanical pencil to do this, just without the lead. I couldn't find anywhere on TDH where this was spelled out in simple mans terms, which is what some of us need to see sometimes.
I hope this helps someone out who needs it! Looking forward to doing the green tomorrow!
P.S. If you're careful with your stencils, you can just add the next layer to them a re-use.