Quoting MilkieWay:" Ok and I'm sorry to come off like a complete idiot about this (but I admit I am), but are there copies of these forms anywhere - free? Do/can you just make your own?"You can google 'photography portrait contracts' but there aren't too many out there for free. You can make your own as well.
Quoting MilkieWay:" Are those forms the same thing as model releases?"Well, most contracts include the model release but you just need to put the specific lines in it. My model release is technical part of my contract but it has it's own blurb, since most people don't even read the contract lol.