that's true.. the banner isn't really matching the pretty items in your shop.
I would get rid of the photo - since it's also your avatar pic, darken the blue a bit, and change the font. Not sure what you're using to make it, but have you tried to scatter the letters a bit in the word "scattered"? If not, maybe try the dots scattered along one side, at the bottom, or between your name & description of what you sell (like you have now) in white instead of inside of a stripe. It would clean things up a bit to match your look :)
Hope this isn't overwhelming, but helpful instead. If I could be of assistance, let me know :)