I'm in tech consulting (mostly coding software) and am looking for some great sales-pitch resources. Primarily, I am interested in the federal contract/consulting space, but am open to general advice as well.

For context, I've had a sales-based opportunity spark up in the federal space, and the final interview is an on-premise customer roleplay demonstration/presentation.

Sales really isn't my background, but I want to come off as confident & assertive, and successfully sell my offering.