These aren't the only things out there of course, but it should get you started and keep your drawing busy. Available in smaller, more digestible chunks at www.htdhorses.com :
HFN IG 1 Saddle Position
Make a saddle swing out of an ole saddle. Need this one for the grand baby ~I have an old one laying around!
read this little article about the position of the saddle. it is really important that it is put on properly!
Don't place the saddle too far forward, on top of the shoulderblade
Horse Tack: Paracord Breast Collar Set w/ Bitless Attachment, Standard size Braest Collar adjustable Bridle- purple/black/neon turquoise by GypsysEquinePARATack on Etsy
saddle fit More
There are very few times I would mix wearing Brown with Gray... unless there was a really good looking Gray involved...
Exploded view of saddle---Um yeah how cool is this!!! www.thewarmbloodhorse.com