This was a project that was supposedly in the works? but the guy never hit me back on it....so it seems like it flopped(so many projects I get promises from and they do this to me).
I did a bunch of studies on how a saddle would sit on a rex as well as how you would control the large animal while relieving it's mouth of a bit. I used chicken diapers as studies as well as how people ride ostriches for this....this is basically how my brain goes through processes.
Link
AngelBlancoArts
Very awesome diagram. <:D