How to show and carry forward losses now if missed to filed in previous years

Use AS 5. prior period changes

AS 5 is ITR form ? how to fill it and declare loss for ITR filling this year. 

sry, I think ITR 1 must be used for capital gains issues and instructions 

For individuals having salary income along with income from business or profession are required to use ITR-3 form for filing ITR.

ITR 2- Income from Capital Gains/loss on sale of investments/property (Both Short Term and Long Term)

I misunderstood cfl  for cash flows for some reason :)

Yeh. ITR2 to be filled. but, question is that I missed to delcare it in previous year ITR filling. so, can it be show as loss in previous year while filling ITR2 of this year ?

Sry you have procedure doubt. I hope someone here with expertise reply to solve your issue. I did not do ITR 2 yet