How to fold sheet metal one by one twice.

your version is different.. i started my own sheet on solidworks 2012
and how its done

  1. Step 1:

    1st made sheet metal

  2. Step 2:

    sketch the line on edge which you want to bend

  3. Step 3:

    select command "sketch bend"
    their are four bend position... check which you want...

  4. Step 4:

    1st bend

  5. Step 5:

    for next bend... sketch on again face1 (used in 1st bend)
    and draw a line on edge which you want to bend.

  6. Step 6:

    here is the setting for 2nd bend

  7. Step 7:

    final result... i hope it is required result... if not explain your question more please :)