@kirsten-mcg - thanks for your time in responding. I love your thoughts about "perfecting my craft" and totally agree, as my skills definitely need to be refined and improved upon. I was really encouraged to hear that you see similarities between my characters as it's hard to see whether you actually have any distinct "style" when you start out! I also agree that it's hard to completely change your way of working, so I'll just keep experimenting and trying to improve my skills.
I agree about the rhyming picture books. My daughters definitely preferred them in their early years. I totally understand that they are costly as they aren't easily marketed abroad without substantial rewriting, but it does seem a shame! Thank you so much for your thought and extremely helpful advice!