As someone who has acted as an instructor I can tell you that the main things I look for is ability to fly the plane in a safe manner, in the proper pattern and to follow my instructions. One reason for that should be obvious - the safety of the other fliers/members. A second reason that may not be so obvious is for the preservation of the flying site and that goes hand-in-hand with safety. You may be able to loop, roll and spin the plane just like the best r/c pilots around, but how well can you control the plane when you're turning onto final into a gusting crosswind? Give your instructor time to get to know you as the r/c pilot you will become. Btw, the last thing I teach is take off.

Edit: I agree with Bruce and RCKen. Your instructor could have let you do at least a couple of loops and rolls.