Responsive Interactive Card Details with flip card

What are you most proud of, and what would you do differently next time?

Making the flip card was an idea I had ever since I saw the challenge, but was unsure wether I could make it work. Plus, I worried the second card would look too out of place, being simply part of the layout instead of something that's interactive. I might change the animation later, but for now I'm liking it the way it is.

What specific areas of your project would you like help with?

Any feedback is appreciated.