Try getting him a smaller hide. That will both allow you to fit two hides in there, and will help him feel more secure.
If you're having trouble with humidity (heat lamps tend to suck it all out), move the water bowl over the UTH. That, and putting some foil over the top (if you have a screen top) will make it easier to manage it.
Read the caresheet, and I suggest getting an Accurite to measure your temps and humidity. Walmart usually has them for $15. Get a thermostat for your UTH, you don't want it to go too high and burn your snake.
Get some of that paper that you attatch to the tank walls to provide scenery, or just blackout paper, and attatch it to both sides and the back. This will also help your snake to feel more secure.
Other than that, welcome to the forum!