First, lets move the heat mat to the side of the tank and check the package to make sure it is large enough for your size tank. Second, you've got to get a lot more plants. If you don't have a lot of money to spend on bunch of different plants go to home depot and buy the largest Pothos that will fit in your tank. You can plant it in your substrate directly or keep it in the potfor now. Wash the plant thoroughly before puttting it into you enclosure. If you have the time and money to get more creative start going through the photo gallery of everyones tanks to get ideas. Your tank should be "thick" with folliage right now. The ability to hide and blend in undetected is what he needs right now. Only one plant on the side is leaving him expossed. Think 3 dimensionally when decorating his tank. Use up all that empty air space with plants and branches for him to climb on. He should be able to completely hide from you if he wants. Once he has settled in he will sit on the branches up front to look out. Right now he needs comfort and security.