Looking for an artist to help me finish my game, rewards for the best!

I'd really try if I had time right now. You can always ask me in the future, I may be able to help ;)
I can work properly with Photoshop and Illustrator (I took a course of 3 years)
Add me on Steam if you want to ;)

GUI as in Graphic User Interface?

You should've at least given some minor information as to what you were working on.
Now everyone comes by and is like wth is this guy talking 'bout? 60% done making what? :P
60% of a game of Pong vs 60% of a MMORPG has a big gap in between :D

I can do rectangles and stick figures in paint, I'm sure I'm qualified to do this.

I could probably draw something up, but you need to post more info.
I mean, to create a GUI you need to at least get some idea of the game mechanics and overall design. Post some screens/vids of what you have as of now.

what is the art style like of the card art?

Hey mate, if you want, lately I'm extremely interested on doing "UX passes" of GUIs and stuff. I sit on the game for an hour or two, then give you my opinion on general feeling of the GUI and the game.

My experience is on the graphic design communication field (+5 years of learning already and a couple small jobs), as in, how to better communicate an idea. Basically, it's saying "this typhography isn't good for this part", "using the color red for something positive isn't good", and things like that.

I'll be working alongside your artist and can probably generate small content.
Will do it for free, no need for more games (though if you want to chip in some moneys, I'll be glad to recieve it, thought it's completely unneeded).

If any other developer wants my collaboration, contact me, also. Will try and do a small site about that, later.

This actually sounds interesting. I wouldn't mind helping if I got spare time.

My art skills aren't the best, but I know my way around photoshop and a tablet. I've done few small scale art projects, designed a banner for a youtube channel, etc. I'm also a psychology major, so if you're looking for any help in that regard, I'd be more than happy to help. (Think industrial psychologist. Evaluative efficiency, areas to be cautious about, etc)

I'm a 2D pixel artist who can lend his skills if you need help. I know (and use) Photoshop and I also use various 2D pixel packages (i.e. Pixen, Grafx 2, etc.). But like the others have already mentioned - I need to know what you want for a GUI, the style of art you're after (i.e. cartoon-ish or realistic), and I need to see the type of art style being used for the main sprites (i.e. the cards) so you don't have the GUI art and the main art clashing. As I'm sure you already know, it's important to have the art styles match closely and I am very good at that.

I would love to help out, unfortunately, I can't draw. Is there anything else I can help out with? (beta-testing, etc)