Messing around with another art app called Krita, I've been hearing about it a lot lately. I first heard of it back in the day when I used Linux exclusively and I was looking for Photoshop alternatives. Anyways, I don't remember trying it then, but after taking it for a swing today on Windows. I have to say, this program is a real contender. I've come away very very impressed! Very artist friendly.
Definitely worth checking out.
As if that wasn't enough, the program is FREE! Crazy times we're living in!