pretty straight forward. Complete the i765 n i131 forms and submit them with your i485 receipt notices. With the new fees, you may want to check the current cost you need to pay. Good luck!

@Rijo Rijo can I do online? or have to mail the form to uscis?

@blue luck, I think you can do both online.

@Rijo Rijo I just checked and I see different options but I’m not sure which one should I choose? Will it be F-1 post-completion OPT?? I didn’t see any option with I-485

i-485 based EAD is c9 category

I would suggest you to go with lawyers since even simple question creates confusion. A simple mistake may cost you a lot in the future.

my husband and I filed all my paperwork by ourselves and my i765 got approved two days ago. lawyer wanted to charge me $5000

I would use a lawyer. $1000 is worth it.