I have been working on a game partial time for 2 years now, I've done the code and assets myself, but eventually I understood that I would not be able to have nice looking assets without spending a lot of time into it. And that greeting a new team member with graphic designer skills on this project would be a good idea.
My project is purely casual ATM. While I would love to earn a bit of money from it, my main goal is to have something fun to play with my friends (it's a couch console game) and I'm not sure what I want for the release of the game.
Now that I'm about to greet a graphic designer in the game project I'm excited but I want to do things right.
What should I define prior welcoming a second member in the team to make things work regarding the organization of the new team and the potential earnings?
What if things goes wrong and we split, when I have worked 900h on the game and him 20?
Any other tips from your experience regarding this aspect of welcoming a new teammate?