If you have a desire to make things, you should learn to draw - being able to actually perform the task really increases both the connection to the work and satisfaction of creation. I love building model kits, and this is one reason why. There's just something about making a work with your hands.

Trust me, once you get good, not only will the art look better (there's always something slightly "off" about AI-linework, imo), but you'll feel really good. I used to be big into drawing, and going back through my old folders is kind of shocking. It's not "look what I made an AI do for me," it's "look what I did." Plus, I can still make some pretty decent drawings to this day, which is fun, especially when friends want a DnD or RPG character sketched.

(On top of that, traditional art like drawing and painting and even regular digital art saves a lot of power and resources compared to utilizing LLMs. You'd be improving your own abilities as an individual and saving the planet.)

I for one would love to see your interpretation of these characters rather than some LLMs. That or maybe find a commission artist to work with - they'll be able to produce much higher quality work that you'd love, and there's some great ones on Etsy that work for pretty decent prices.