There are 100's of different Feedback Models available, choosing one that works for you is the most important as they should all have the same outcome of positive, constructive input that will help your student or instructor improve.
S.I.P.P.
Benefits - Building & Rewarding
W3
Benefits - Ensures best practice, motivated to change, don't lose sight of the good things.
S.L.C.
Benefits - Clarity, Simplicity
B.R.O.F.F.
P.E.A.R.
C.E.D.A.R.
B.O.O.S.T.
S.T.A.R.
A.I.D.