There is an impressive amount of variety in where you are doing, you seem to have a good balance in skill between drawing all these creatures, vehicles and environments, and plenty of imagination to back it up. Scrolling down, your painting definitely seems to be improving too; you're pushing away that blurry feel some of your older pictures had and it is all looking much crisper. And your use of perspective has really grown too. It might be helpful to have a look at how different materials behave under light - for instance, how the highlights on metal occur, how bright they are, how does it vary for new/old items, the colours, etc. to crank up the believably factor of a picture. Keep up the good work!