Okay, I'm game.

I love stuff like this, actually...hehe.
Yeah, if I could design my own heaven, so to speak, I would create a pristine planet...a lot like Earth, but with lower gravity, say .5 gee. It'd be full of towering mountains, raging rivers and exciting climate patterns. I'd have no major continents, either, as I want just about all land areas to get adequate rainfall (I hate deserts). Largest continent would be about the size of Antarctica, and would lie in the middle latitudes. I'd want to stock it with creatures such as dinosaurs and other mega-fauna, as well as super trees that grow to a 1000 feet tall, mega ferns 200 feet across, stuff like that.
As for me, I'd want to have a way to create whatever body I want, whenever I want...inhabiting the same ol' body would get old after a while...LOL. I'd want the power to be able to fly or teleport myself at will, and to create anything I want out of thin air, such as uber-cool glass houses perched on the side of a 20,000-foot tall cliff and houses that drift among the clouds. Generally just really cool stuff that's just not possible here on Earth due to those annoying laws of physics and whatnot.
Others are welcome to join me on this world, so long they don't interfere in whatever I wish to do...hehe. What the hell, it's my own fantasy planet, so I get to be absolute ruler of it, permanently. If anyone doesn't like this arrangement, I'll be more than happy to arrange passage to another locale...it is a big universe out there, after all. Anyone that does choose to be my guest on my "Byron's World"

...just keep in mind, it's all play and no work. Fun is the word of the day, every day, for all eternity.
So, Jack, I can't wait for you tell us of what your fantasy afterlife is...I can only imagine what it might entail...LOLOL.

Nowhere to run, nowhere to hide...
...and the meek shall inherit the Earth!