Halter came off during the night

DAY 2 -  I arrive at the ranch to find out Poster Boy had somehow gotten his halter off during the night. I'm thinking "how am I going to get it back on." So I just start throwing the rope on him, over and over and over, about five hundred thousand times until he gets used to it, then once he can finally handle the rope, touching him all over his body. I start to run the rope across his forehead, over his ears, under his jaw, down his neck until he doesn't seem to care about the ropes. Then I was able to bring in the halter and slip it over his nose, and under his chin and bring it around his neck. I was able to get the halter on because of the rope preparation I had done earlier. It's all about preparing the horse for the next step, and with a wild mustang it's building on miniscule baby baby steps.