Sculpting clothing is a big challenge. While tighter clothing is easiest to sculpt imo, long flowy clothing (capes, long jackets, long dresses, etc) can be easier to simulate. Take the concept sculpt I showed during last week’s stream, I simulated the jacket coat-tail instead of sculpting (arms of the jacket were sculpted):

I also taught the simulation approach in the Realistic Character course.
But it looks like you’re getting the hang of it. Practice absolutely makes perfect and each new sculpt will be better than the first, both in quality and workflow efficiency.