You are actually really good I am definetly no artist but this is my 20 cents worth: -With the first image there is too much going on. Either make the walls way thinner so the floor is the main thing. Otherwise make the floor tile heaps more simple, like just a plain concrete look with some cracks or something maybe? -The second image of the character is awesome. I think you nailed that one XD -The third and forth are TOO much of the same thing. Make more kinds of grass/concrete and add them in randomly. Although the first one you tried to break up the samey-ness with the flowers, the flowers are all exactly the same. Variation will make it much more pleasing to look at! -The last one is good. The stars don't appear tiled which is good. The planet however looks... wrong? I think it's because everything is so smooth/ no islands etc... Maybe some cloud cover would look good aswell Anyway, like I said, I'm not artist. And you can definetly draw, none of the fixes I have thought of have to do with your actual drawing. Just the way you put it all together Keep up the good work and hope I helped!