Wow... so many awesome lines in this, but the whole story is SOOO great! Just my flavor.

I hung on the part of walking through glass and how it feels icy, wet, sad. Man, that was a trip right there. I stayed there for minute before continuing.

"When I tire of flying through things - what then?" Whew... yeah I suppose that's the question he needs to answer after meeting that little girl on the cosmic swings. What a visual that was!

Then she's just standing there, her eyes showing her ancientness, like a guardian angel who can't help further making the decision for him. He can't keep hanging out at the fork, he's got to pick a path.

I LOVE the ending! I'm a big fan of open endings that tease my imagination to further the story. Here, I'm left to wonder where each potential path (waking or crossing) would lead to. Also "Wake or cross." This sentence couldn't be tighter while being so deadly sharp and heavy with the choice of picking something you can't come back from.

I absolutely enjoyed this story from the first word to the last. Thank you so much, Jay! You're an inspiration to those like me who one day want to make something great in the world of fiction.