Don’t undercut your price. You work harder, have less money and the client thinks you are only worth that much. If you are not confident in yourself enough to raise your fees, then you should not be in business.
Don’t Ever Trust Your Competition To Be Fair
Don’t ever trust your competition to be honest / fair.
Barter = Bad. Both parties always feel like they got the short end of the stick.
Don’t Start On Next Product
Not carefully critiquing my first work product before starting my second and third.