(Updated to add what to do with flour and water.)
I've been asked to make a tutorial. Neat, huh. Apparently it looks real, or something
I'm really bad at making them, and the file is absolutely gigantic, and I'm not sure what category to put it in, but here is how I make my fake blood.
It's not an in-depth tutorial, it's not a good tutorial, but if you're going to use it, could you favorite this so I can go see what you do with it?
Available for download.