Hi @HANDRO thank you for your kind words and great questions.
The game itself (mechanics, rules, categories) is being developed by another person. The game designer approached me in April to get some art done for his project. He didn't have anything at that point and just voiced his only 2 desires: the game has to have Ancient Rome and Steampunk styles incorporated into it.
So during the negotiations I kind of became the art director developing the overall look, feel and style for the whole thing, I started with the card designs, then some illustrations, logo and cover were done last.
The game designer started a weekly podcast on how to design your own games where he does talk about this game, it's rules and development as well if you're interested https://www.facebook.com/gamestormedu
Like I mentioned before, I started this in April (although I don't work on it full-time) and have been chipping away at it slowly. My background is graphic design and I was a project manager for awhile, so I did come into this with some knowledge of how to approach large projects.
That being said, I do have to mention that for projects like this there's a lot of boring work that is not related to illustration: setup, project planning, timelines, testing, presentation assembly. Hope that helps.