Work on github?

Hey OP, can I take a vouch copy and verify if this is working?

What exactly assures that you're only selling 4 pieces?? no guarantees there. Also your 'feed back' seems sketchier than your claim of 4 pieces only...

I'll suggest showing some proof first to gain trust, otherwise I really don't see many people taking interest, specially since you're relatively new user.
Anyways, good luck with sales.