Comment by asktell

Increase your rate. Let them know that 2012 is a new year and every year, at some point early in the year, you increase your rates to reflect the growing cost of living, but more importantly, the growing value of the skills you've acquired during the preceding year. There is no reason you can't double your rates if you have enough clients who are willing to pay at those rates. If they don't value your work at your proposed rate, they'll drop themselves.