Collabs/Interactions for my girls

I'm still alive I promise! College got me too busy to actually be able to be really active because of the tough classes that I had over the semester, but I am free now! So I am looking to do collabs/interactions for my girls. I'm not for sure if Nova (the gray one) is open for interactions yet, but Bella is. I am looking for collabs to do for them since I need practice with drawing the both of them. 

Collabs are unknown on the limit yet, but I probably will put them at five maybe? There is no limit on the number of interactions though! Backgrounds are the one thing that I'm not good at yet since I want to focus on trying to draw them first and backgrounds later.