Do I need to file the 1099 NEC section as a self-employed?

Hi, 

 

I'm a graphic designer and I 'm struggling to enter my income. 

 

I didn't receive any 1099 NEC the past year but I earned more than $600 each time. Can I fill all my income into "Other self-employed income"? Or there is a risk to do that?

 

Thanks !