You don’t have to do anything else. Everything is handled by the title/escrow company here. Most title companies will accommodate you on how you want to get paid.
The easiest is direct deposit or wire transfer into your bank. You just give them your routing information and when the buyer closes the deal with the seller, your pay is taken out of the funds and transferred to you by the title company.
Yes, you NEVER sign your assignment until you have the deposit check.