Hello! Welcome to Feedback Quest 7! My name's Hythrain and I'm one of the hosts and one of the streamers for this event! This feedback is being written live as I stream your game! If you're interested in seeing my live reaction, let me know and I can send you a link to the VOD once it's posted to YouTube!
So my normal approach for any game in these events is simple: I get the game, make sure it's not a virus, then play it with as little information on how to play as possible. This way, I can judge how intuitively someone can figure out the game. Only if it's obvious that I need to read more will I do so. I note this so you can get a sense where some of these feedback comes from. In addition, I want to note that feedback and rating are different; don't use this feedback to gauge what I'll rate, nor should you view my rating as entirely indicative of my feedback.
I'm always down to try a puzzle game, and this is a fun idea that I've not seen before. For some reason I thought flipping might be based on three directions, but I realized that'd be a bad idea. Instead, you had the inversion going on.
As for feedback... honestly, I'm a bit unsure. The most I could think was give the ability to see copy of the finished image in case they get stuck instead of outright telling them, but I also recognize the problems that can cause. Probably good to say it's good, gameplay wise. Maybe just ensure in certain scenes it's easier to discern what is right?