Give myself my favorite powers, then just play with them while travelling all of totality and beyond while having fun.

Create my own pocket dimension and enter it. I would view the events occurring in the outside world, while having my own fun in my personal dimension. I would also provide help to mutant kind, by offering my dimension as a safe haven for any mutant looking to get away from the struggles of the outside world.

Jamie's powers are at their best in Otherworld. I'd be afraid of screwing something up including myself.

I would use his powers to give myself insane levels of intelligence and knowledge from the greatest/smartest fictional characters so hat i can truly use this power to its full potential and then would use it to become OP, while also helping my family, friends, church brothers and sisters, etc. and give them a good life.