The english saddle is way too big for you, and finding one that fits you better would definetly help your position (which is great considering the saddle fit). Riley looks amazing for a three year-old, I would just work on getting him more rounded. But I guess that's a personal preference for me... In western I would work on bringing his nose in just a bit, and getting his butt up underneath him more. In western, I personally prefer it when the rider sits up straight, like in english, with shoulders back, I think it makes you look neater. But again, I'm mostly an english rider, so I'm biased.