The PSP staff should demonstrate the proper position. Basically, you will lay flat on the floor with your hands palm down, fingers forward under your shoulders. They should be able to see part of your hand if standing directly over you. You push fully up (up position) and come down until your arms are roughly parallel to the ground (down position). It doesn’t matter where the elbows are pointing. The staff will let you know if it counts or not, trust me. As I've said before, some are not very forgiving. Don't forget that the push ups are continuous, no pausing.