Hi!! You have correctly picked up that Percy and I are livelong homestuck kids hahahaha. Not so much a direct inspiration as it is the product of that story being one of the most important works of art for me in general! I feel like the comparison to Dave or Dirk is more obvious but I like that you invoked Sollux there :)
As for fanart/fanworks in general, go for your life!!! Whatever you want, write your weird fetish erotica. Just don't be hateful, and if you can bear to do so, pleaaase send it to me! My email is on my itch page :) Thank you for the kind words!!!!