Since you're self employed the only way to prove your income is by paying your taxes. You need to show your income.
Now that you have taken care of this part, your next step would be to speak with a lender. They can help point you in the right direction.
Once they analyze your debt to income ratio, look at your credit score & history they are best equipped to either approve you for a loan or help you with credit repairs.
Call a few lenders, start with the ones that responded to your question right here on Trulia.
If you haven't filed your 2011 taxes yet, be prepared to provide your 2011 1099.
Since you are self employed your Loan Officer may need more evidence of what your overall net income is, and therefore is asking you to file your 2011 taxes.
However there may be another reason that your loan officer wants 2011 filed? I would be happy to give you a brief explanation and review your situation if you would like? You can call me at anytime.
Senior VP of Mortgage Lending
773 290 0455