It's a bit too cartoony. Now I brave the hard-to-edit but very sharp hifi option:
I did some minor retouches, especially in case my final image does not have a white background. I made the background layer bright pink and corrected any places in the shapes that had bright pink shining through. The images in blogger show up with a black background, which helps me see I need to tidy up my shapes a bit. The blur over the outline really doesn't work against anything but white.
I'll try to make time this weekend to actually turn this into a pattern!