Questions about income source during the interview?

I have done some music freelance work through the internet over the past few years, and my earnings show up in my bank balance, as well as in the income tax statements. However, I do not have any physical receipts for this income.

This income also exceeds the income from my day to day professional job. What is the likelihood of me being questioned about this during the B1/B2 visa interview, and is this significant?

Your income is what yr income tax return shows.

You can claim a little higher income this yr since return is for previous yr.

Income tax return is supposed to club income from all sources