i agree with others get a big foliage plant like a 1-2' ficus to start
the more desirable it is for him, the less he will wander away from it
and make sure he can't climb onto the light. they will NOT be able to tell that they are burning themselves until it is too late and will foolishly climb right onto the hot domes if given access
EDIT: I only see 1 light? do you have UVB and heat?