I watched an interview with Paul Banks from Interpol recently where he talks about finding the balance between perfectionism and just getting stuff out there, sounds like he tends to lean towards the latter (from 2:20, the whole thing is interesting though, even if you don't listen to that type of music):
https://www.youtube.com/watch?v=Ndw4UHYvuqs
When you're just starting out though, I think aiming for perfection (whatever that may mean to you) is the way to go when it comes to creating as, although it can be maddening, the results will always be better than if you set your standards low.