I wouldn't say it's needed *shrug* I mean, if you wanna just pick out another deviant and say 'hey, wanna do the other half of this with me?' then I certainly don't see a reason why you can't do that, if that's what you mean by not knowing them XD
Well, one way you can do it would be to print out the meme on paper and draw, then rescan it back in, or simply to scan your pictures for each of the questions and use gimp or photoshop to put them to each of the questions for the meme c:
(this may seem oh so annoying, ((and im sorry ;u ) but--) I am doing this twice-- both with different friends. I haven't finished the other one yet, and my friends haven't even started so, here is what i have so far: [link] and i am currently working on the other one. Would you like me to send that one too?
Well, with a double meme, you decide with another person (a friend, partner, etc) to each draw on one side of the meme. Then you'd proceed like you would any other type of meme, until you both are finished. Then, usually one person would send their half to their partner (via email or such) and would put them together using microsoft paint, photoshop, sai painter, etc. then the finished product is uploaded either to one or both partakers accounts X3