Jeebus! How did this get accepted? The only pixel level work in it is the stars.

I was having a lot of difficulty seeing 138 colours in this, so I went in and took out each colour to see.

About 40 of those colours were 1 pixel on the image only. Even more had 10 or less pixels using them. You might try limiting you palette a bit more. You can do a lot with a little less.

This is a very nice scene, and I look forward to seeing some more pixel art from you as you go along.

Ehi, nice piece. I think that if you cleaned up the lines and added anti-aliasing, this pixel would come up very much better! But for your first pixel, you are good!
I think that you have potential, you only need to learn some techniques.

you REALYY need to clean your lines up

wow! this is a impressing first piece! i hope you will stay and show us some very cool scenes in future. this is very promising.

Yeah but usually it's more obvious and manually would take longer.  Based on the technique on the rest of the piece and the massively high color count I don't think it's likely to be manual.

Wolverine:Not neccessarly that could easily be done by hand

Is that a transparency effect on the clouds there?  I don't think those are allowed on here unless done manually.  I'm a bit fuzzy on the rules but it's the reason I haven't submitted a screenshot of a game I've been making (since the game itself pastes the transparent shadows in realtime).

Welcome to PJ!

Not bad for a first! Don't forget to check out the tutorials section.

This has a very interesting style to it.