You use far too many colors needlessly... you can achieve similar look with far fewer colors:



Notice how I use 9 colors (including transparency), your image had a total of 34? Colors and gained little from it. I used what I could make of your line work and hastily threw this together as an illustration. Notice how much "cleaner" the updated version looks, it stands out more and looks less blurry. Mind you it was difficult to discern what you intended with the shapes given so I did as best I could.