Glad you had fun at the show!
Rocky's front mitts certainly look very good from the pictures you have but it is quite hard to tell.
In tabbies the things you are looking for are clear strip markings on all the points, face, legs and tail BUT NOT ears. The ears should be solid, also the tip of the tail is allowed to be solid.
They should also have white spectacle markings around the eyes and buttufly markings either side just below the nose, all of which he appears to have from the photo's.
You can read more on the standards of points here:
The Governing Counsel of the Cat Fancy - Birman Standard
Getting someone to asses him is a great idea as it will give you a better idea, you have to remember that kittens will take a while to develop all amrkings also.
My chocolate tabby Mia is looking very good for show at the moment except the colour on her legs is not yet dark enough but she is only 8 months old so it will continue to darken yet.
Let me know how he gets on with being assessed!