Hi there! I'm not entirely sure, but I think I might have something that could help. I remember hearing about this online school that offers courses for artists. I still have the link saved somewhere... Ah, here it is: https://uk.elvtr.com/course/become-a-technical-artist. I haven't taken any courses there myself, so I can't personally vouch for it, but it might be worth checking out. Maybe you could visit the site and look into the details of their courses yourself? They might have exactly what you're looking for. Good luck with your artistic journey!