You're doing quite well so far, Moist! I think that this banner is my favorite:

Everything works - the color scheme makes sense, the circle designs are well-placed and fit in with the circle door, and the text on the left is really unique.
Suggestions for improvement: I like the font you use sometimes, but you don't have to go big, bold, and colorful all the time. Maybe you could try some different font styles (e.g. smaller, and simpler) - simplicity makes a nice statement, too.
All and all, great work. You have a very distinctive style, which is always good, and you seem to have a good eye for image placement, which is key in graphic making. Keep it up!
