Im sorry I don't think you can make your own breyer doll. Breyer is very good at making things so if you buy one its worth it. Sorry! :(
You could always search on youtube, look for "myfroggystuff" they've got a lot of tips and tricks in doll stuff making.
eBay or Etsy local arts and crates fairs
If it is a nice quality, and custom made, I would charge about $10 or so for it
the most professional and best breyer horse competition is held in Kentucky called breyerfest. you bring your breyer horses, and try to fit the action such as jumping, have a jumping doll with the right tack and horse. then show it. if you win you get a ribbon. kinda like a real horse competition
Yes, you can get a Breyer rug cut out. The Breyer model horses have several accessories including rugs that can be purchased. You can make your own cut out rug by using tissue paper to measure the horse and make the template.
What you can make for your breyer horse is tack such as halters,bridles,hoobles. if you are really good at making tack you maybe able to make saddles or rugs/blankets and saddle pads.
Most Traditional saddles do not fit Classic Breyer horses. Although, Breyer made some Traditional horses like Newsworthy and the "My Favorite Horse, Appaloosa" that are more Classic sized but they do fit in the Traditional saddles. Breyer does make saddles for Classic Breyers but they aren't fancy like the Traditional ones are.
Breyer was born to Irving Gerald Breyer and Anne A. Roberts.
To make a homemade Canopy Doll Bed you need materials such as wood (preferably lumber), a decorative piece as a headboard, such as a small section of plywood or even thick card, and obviously some materials for the curtains and sheets.
It is all about the angles and props. I am working on a Breyer movie called "Breaking Fire" and the shots are going to be Epic and up close.
Try: Ponylagoon.net
how to make a homemade confettie shooter blower