If you have a "single-member" LLC, and you have not elected with the IRS to be taxed as a Corporation or S-Corporation then the IRS calls this a "disregarded entity". That means it's not separate from yourself.
If you have a self-employed business and you're now doing the same business through the LLC it's all the same thing. Report the whole year in the LLC on Schedule C of your Form 1040.
If you were a self-employed realtor and then formed an LLC to become a candy maker, those are separate businesses and should be kept separate.
