This is my first ever pixel art try. I just wanted to try something, so I made this rocket. It's not good at all, I'm just wanting to get some basic feedback.

Edit 1: I tried shading without tutorial, and I would like to know if it is good or not.
Edit 2: Picture made smaller
Edit 3: Is this better with the shading? I'm not totally happy about the colors, but I'm first trying to get the shade right. I tried to remove the pillowshading.