Thanks all. Great suggestions!
@digga: I have a cheap brush with nice soft nylon/acrylic bristles (I'll take a pic) - it's about a size 4 and has a tapered end. But the eagle just came out that smooth from gently using the side of a needle to shape it - lucky, but I'll take it!
@Sicks: thanks, though selling our house (thus having to pack everything away in the shed after even the littlest session) seems to have slowed me down somewhat.
@Maenas: more good suggestions - I'll definitely look at wings/feathers for it.
Couple of little tweaks: first I tried a rune on the chest. According to google this is a high elf rune that means 'Lathain - storm, or wrath'. If that means anything to you. I'm not sure it looks cool enough.
this is an overview: I took the whole fabric/buckle off and swapped it for a short wrap. Hopefully it looks better.
finally it is held on by a teeny oak leaf at his hip. Really hard to photograph, hopefully you get the idea:
more soon!