The artist's abilities actually seem decent if you look at his background pic on twitter (
https://twitter.com/HeroicFantasy ). It's unusual and I like it.
But if you look at his twitter main icon you can tell he did that himself. This is a guy taking things from a possibly decent artist and he's butchering it by putting it together
himself and it becomes inconsistent and uglier as a result. It could be fixed by about 60% if he tweaked how it was all balanced, made the monster icons less garish, made the interface more consistent, balanced the colours etc. It would really go a long way.
But I sense more of a "it doesn't really matter and I don't care" attitude rather than a "I wish it was better but I don't know how!" that might make him open to doing the adjustments needed.