New here,

[Steel General]

I will third what's been said about the background - it's fantastic.

The black on the mountains is a little jarring, maybe a dark brown would be better.

Overall very good for your first posting - far better than the mapping monstrosity I posted.

I encourage you to follow through the tutorials or at the very least experiment with them.

[Ascension]

Instead of using the black lines to show what the ridge lines are, I'd suggest a shaded relief method...a layer of 50% gray on top, set to overlay, then use the dodge tool to lighten things up (make them higher) and the burn tool to darken things up (make them lower). It's more time consuming as it has to be done by hand but it produces a nicer result. Otherwise, I'd just dump the ridge lines. Nice job other than that and a very good start so congrats.