Very neat interpretation of the theme! First time seeing a puzzler built around drawing a pattern and the intersection mechanic made it even more unique. And a solo project in 48 hours -- that's impressive!
Some feedback on the instructions: I did have a bit of trouble understanding why the intersection to create new stars wasn't working, because I didn't realize I needed to finish a constellation in order to spawn the new stars. It was also a bit confusing on that level that I stopped being able to draw lines when both galaxies had been used, but the previous level stated that I could reuse galaxies?