hiyah guys! new here!

i'm submitting galleries for about 2 months now.. not full time though but i'm submitting 1 gallery per day since i got started.. been submitting it to about 20 free partner accounts and 7 paid pa's mgp sites.. got a few signups like 15 to 25 per month.. and i'm not really happy with it.
now, i got a few questions to all the gallery submission experts out there...
- do i have to buy more partner accounts?
- i'm planning to buy paid spots also.. is this option worthed the investment?
- base on your experience.. when can you tell that a 1 gallery per day submission is doing ok? how many sales does it make per month?
your inputs and comments will be greatly appreciated.
thanks.