I’m going to be 100% honest, I don’t mind my art being used as reference just so long as it doesn’t border on copying the entirety of my style. (Not suggesting my style is absolutely unique or anything) But if you want to incorporate a few elements of my art into your own, sure! Go right ahead. I don’t have any tutorials to share though, I’m sorry about that.
Have fun and I appreciate you asking permission. (*´・ｖ・)