kilaru, rayjen, sashi1
Technically you can apply for EAD/AP yourself and it is not too difficult a process. But again if you have faith in your lawyer you can have your lawyer do it too. One advantage of doing it through your lawyer is that he/she will probably handle any complications if they arise, better. Unfortunately, I could not trust my lawyer's knowledge or efficiency based on her past performance so I elected to do these renewals myself.
I made two packages, one for EAD renewals (my and wife) and one for AP renewals (again me and wife). These are to be mailed to different addresses. The covering letter for EAD renewal was a simple request to renew the EAD since the current one was expiring. In the covering letter for AP I mentioned that I would like to visit family in July and would like to be in a position to travel at short notice since my fathers health is failing (which in fact is true). Also included contact information, A#s etc.
Hope this helps.