Am I too big to be taken Seriously?

You maybe look a little tall, but it's not an uncommon sight in the m&m showring. If you were looking to do serious county stuff I'd suggest borrowing a shorter jockey, but for local level/lower county I think you'll get away with it, particularly if you can get comfortable riding in shorter stirrups.
 
Did I ready somewhere else that he's only young? (4 yr old...or am I getting you mixed up with someone else) if so he'll fill out and muscle up loads yet.

Noooo I don't think your too big but for showing you my need to experiment with a few saddles to create a better 'over all look', ride a bit shorter, may need a bit more of a 'chair seat' style saddle so you can still have a straight cut type showing saddle for his shoulders but also where your knees won't poke over the sides.

He looks great fun and I'm sure he'll do you proud what ever you do with him :)
 
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