Hey There Stephen!,
I'm a Lil Late to the Party However,
If You Wanting PSA 10's:
1st off ~ Put aside the Cards that are Off Center, Diamond Cut etc...
2nd ~ Same wit Surface damage
3rd ~ Same wit Dinged Corner's
4th ~ Same wit Edge wear, Damage
And You Can Really Do a Good Job By Purchasing One of These:
https://www.youtube.com/watch?v=u5gim6Kht6o
Get Rid of the Loupe, it'll Only Cause You issues...
Because You Won't SEE the ABOVE ISSUEs!!!
GLTY!!!