There's a lot that can be said about this software, some good and some bad. So I'm going to list the Pros and Cons of the software as well as a tl;dr at the bottom.
The wrap-around feature which is surprisingly well implemented and easy to use
The brushes are well done and almost any brush you'd need for a drawing or painting is already implemented
If a brush you need is not implemented you can tweak every brush to your hearts content and save it as a preset
The perspective grid is easily created and edited to create near perfect perspective drawings
Photoshop-like layers which will make any photoshop user feel right at home
Excellent developer response (Read below if you want more information)
Don't have enough money to buy Krita Gemini? Go to their site and get the free Krita Desktop, same software almost except no Steam support and a few features aren't there but other than that the same thing but free. (But buy Krita Gemini as soon as you have enough money)
Unable to animate within application
Small images sometimes don't work (For example 128x128 px)
Too many pros, not enough cons.
I'm the only person having the problem in the cons list and they responded and talked to me one on one on steam in order to understand the problem so they can try and fix it ASAP. It's like everyone is having the problem and they want to fix it quickly. GREAT developer response and I think better than what I've ever seen in my entire life. Sure it took a few days for them to actually see my review but I'd rather wait a few days and get this kind of customer service than wait a few days and they do nothing or not even get a response in general.
Figured out how to use pen pressure, I guess my tablet was just screwing up so NOT THE PROGRAMS FAULT. With pen pressure lines are AMAZINGLY smooth and I'm beginning to like this program more than Photoshop as it's MUCH cheaper and just runs better in general.
Tldr; Excellent customer service, excellent tools, and professional brushes make this an EXCELLENT buy.