I've shown a lot of our mares & foals over the years. My Beau was right with saying the main thing is that they behave. Just go out there for the fun of it & experience for Wombat. I also agree that it's one of the cutest names I've heard. Maybe I can enlist your help naming mine next year?
Frequent practice but short periods of time...most of the time foals have the attention span of a gnat. I've been working my little guy for 10 minutes twice a day while mom munches hay in the stall that's in our indoor.
I clip mine, ears, muzzle, bridle path, & legs if they've shed already. I've never body clipped, takes too long & judges should all know how funky babies can shed out.
Good fitting show halters for little ones are tough to find. We had a few plain leather ones made by an amish gentleman. Never had luck with a pre-made. Not a big deal, I've shown them at open shows in their nylon halters, but use the leather at breed shows.
Good luck and post pics!