You would first add up the total amounts and enter them as amounts not reported on a Form 1099-MISC:
Since you didn't receive a Form 1099-Misc, you don't enter your income as 1099-Misc income - the data entry is different.
Type Schedule C in the Search box at the top right of your screen and hit Enter
Select the Jump to blue link
You will then select "Edit" beside your business and walk through the questions until you get to the "Let's get income for XXX" screen.
You will then want to select "Additional Income" (click on screenshot attached) and Continue. This will take you to where you can enter any cash, personal checks or credit card payments (Form 1099-K) related to your self-employment. You may be asked some general questions about your business.