ITR3 Filling Professional

Hi Sir,

I have a Gross income of 2,25,800 in a financial year, I am trying to file ITR3, here are some of my doubts pls clarify.
I am a engineering consultant professional. My TDS is in 16A form - nature of payment 194C 

 Questions
1.Can i Put Zero in  Balance sheet and file it since i am a professional ?
2. In ITR 3 under trading account part A in "gross receipt from professional" can I put my total income ? or else where should i put my income?

# i know i am under exemption but still i need to file please answer ..Thank you