Empty church/school parking lots, orange cones, and practice, practice, practice, then practice some more. Do figure 8s around the parking lot, then practice backing up, practice parallel parking (again, it is so you know where your rear is), if you have a back up camera, practice backing up with it using cones, etc. We did several weekends doing at in empty parking lots at the local university, helped me feel confident when we did our driving tests to upgrade our licenses.
Barb