Wrinkled skin? Help!

[The Serpent Merchant]

I just changed the water out a little bit ago, humdity is up around 68% now so that's getting better. should I also try misting him?

I personally try to avoid directly misting BP's as they don't really seem to like it. You can if you want as it won't hurt him. If you do make sure that the water is room temperature fist.