LBR,
They' re pretty straight forward. Just come up with a pattern or graphic using a photo or paint program (I use Photoshop because you can go wild with it). Scale it to about 1 1/4" wide by whatever length you want. You can then print it out on clear labels or bumper sticker vinyl. I did some for my kids arrows on Avery brand clear address label- 1 1/4 X 2 1/2 (?) because you can download templates that work on MS Word. So you end up with a page on your screen that you can essentially fill in the blanks and it prints off a whole series of peel & stick cresting. If you go the full sheet route you can still put multiple labels on it you just have to cut them out. A bed style paper cutter works well for this. I crown dipped some arows in white first, some graphics I applied straight to the wood. With bumpersticker sheets you don' t have to dip first. Once the crest was on I applied an acrylic urethane sealer on top (several coats).
Crests I did on an ink jet printer smeared when I brushed on the sealer, switched to a laser printer & no problems. Might not be an issue if you dip or spray seal.
If you end up with a slight hump where the paper overlaps, it can be trimmed with a razor and a straight edge ( if it bugs ya).
Clear as mud?
RC
give me shout if you run into difficulties.