Is there any way to make w32dasm disassembly editable ?

yes

Harlequin made a dll and a patch for WDasm893 to do what you want... i.e you want to make a 75 to EB in WDasm directly without closing and using Hex editor ?

Protoooooools should have it.

if you mean to be able to comment the code , then u got to use IDA