The Curse Puzzle 52: Draw the line #4
Not sure if this is the only solution, but if you battle to sort the reads and yellows, then this picture might help you solve this level. My strategy with these draw-the-line puzzles are to just start and then you will quickly realize where the more tricky parts are. Then start with the difficult parts and work your way through.
The Curse Puzzle 53: Hamiltonian #3
TO solve this level, see below for a starting point. I did not find a lot of difficulties here.