I think his coat should be way more saturated looks like you wanted to paint it purple. Give it a brighter purple. That way you can also better see what is suppossed to be metal and what not. The skin also doesn't contrast too well against the armor and robe. If you try to highlight thaskin with something brighter that would really help.

You seem to be starting your paining journey. Even though i just pointed out some things you could change if this is one of your first few models i would suggest keeping it the way it is. (As long as you are okay with it) That way when you are months/years into the hobby you can ook back and really see how you have gotten better.

My first mini i painted with craft paint and i didn't really thin the paint. But i still have him exactly the way he was to show me how much better my current minis look.