For traditional Japanese tattoos (I'm working on a backpiece) it's considered disgraceful not to finish, so as @bongsau said, I say finish what you've started first.
I should clarify my advice on the subject isn't to abandon your current tattoo in progress, but if your in between appointments and get something in between I see no problem with it, providing you can afford to do so
Bummed out. Have had a five hour session booked for over a month. It snowed today. Not a big deal in most places. But if you live Alabama, life stops and everyone stays home. Hoping my artist can get me rescheduled soon.
What is a couple weeks compared to how long I will wear this thing?
I'm in the middle of a sleeve with Scott Sylvia and I have went and got fun one session tattoos in between by him. I'd say go for it if you can afford it.