How do you make the final version of cards? Do you use Photoshop or something similar or do you have the publisher or artist do it? Also, do you write to artists after you are done the final version of an expansion? Sorry for all of the questions!
Ask as many questions as you want.
I just make a prototype (using paint, though someday I will try paint.net). I don't even send my images to RGG; just a file with the card texts and counts, any special notes, and a file of notes for the artists. RGG makes the files to send to the printer (I don't remember what software is used); it used to be Matthias Catrein who did that, though lately Jay has put in some work there himself. It used to be that Jay assigned all the artists, now I mostly assign them. But again that's just a list for him; he contacts them himself. RGG sends card images to the printer, currently Altenburger; they make actual card sheet images out of the cards. And when we okay those they print them.
I rarely interact directly with artists. I do talk to layout people and sometimes there's overlap, e.g. Alayna Lemmer did the art and layout for Temporum and I interacted with her a lot.