The render should be deeper within the background, the focal on the left is much darker than the right side and gets darker too early. The C4D's and other vibrant effects look pretty good, the color flow and composition is pretty great with a few minor flaws. Would not recommend pentooling her hair as it looks like an 8 year old opened paint and scribbled a few outlines on it. Seems like an attempt to blend the pink in? Remove the text too, the text has no flow, no blending, and pretty much ruins the piece. Pretty good, keep it up.