What I love most about your art is your use of colors. Like with this gal, she's a veritable rainbow of loud and subtle hues of pink, blue, peach, orange, grey, purple, and red. That's a LOT of colors, but they all blend and mesh together perfectly. There are so many different shades in just this one simple character that she reminds me of a fish, in that fish scales are iridescent and beautiful and flash different colors. : ) Especially in her fin/tail. Beautiful! I hope you never give up this coloring style.
I can somewhat understand not liking yellow and blue together, unless they're making a pleasant green.
:'D Actually! A fun challenge would be to take your two least favorite colors and think of something cute/beautiful to draw using those two main colors. Some kind of dress, or flower, tree, water, SOMEthing. Blue water with yellow coral, for example. Blue trees with swooping yellow flowers. You might end up loving the result. If nothing else, it makes you think twice about using colors you otherwise don't like.