Any tips for drawing in this style?

I love Skyrim concept art, comic book style and fantasy on the whole and I’m heavily influenced by the overall designs and colours they use but for the life of me I cannot replicate it and even my attempts look horrid. I don’t know where I’m going wrong and was wondering if anyone who does specialise in this sort of art style have any tips they could share? I specifically struggle with the colour palettes and the semi-realism of it. It never looks right. I try to simplify but even then it looks strange. Sorry it’s a bit of a generic question but what I think I’m looking for is a bit of a breakdown of the styles that I might’ve not noticed originally. Just looking for a different perspective. Thank you!!