Are 6 crowns on top the best fix for pointy canine and small lateral teeth? (photos)

Please do not let a dentist drill on your beautiful,natural, healthy teeth. They simply need to be aligned properly. It will cost you less to treat your condition with Orthodontics rather than drill your teeth down and pay for crowns on 6 teeth If you just treat 6 teeth it's going to look bad. It will be very obvious that they've been treated as your arch is narrow and should be widened with Orthodontics. You also have an anterior open bite, and I don't think that's going to be corrected properly with the restorative work you've talked about. Orthodontic treatment using brackets and wires or Invisalign could do so much for you without destroying any of your enamel. It would also correct the lower arch crowding which is going to get worse. This would correct your open bite, widen your smile, align your teeth, and prevent you from having your nice teeth drilled down. You should have some additional space be created around your upper lateral incisors and then no prep  thin veneers could be made to make your lateral incisors the proper  size. Do you want to lose good healthy tooth structure? Do you want to pay more than you have to and have artificial crowns instead of your own natural teeth? Please get a consultation and second opinion from an experienced cosmetic dentist or an orthodontist before you do anything to your teeth.

Get a second opinion from an orthodontist! You are very young and putting crowns on your teeth is a very aggressive move. Moving your teeth into a more ideal position and correcting your open bite will allow you to have a healthy smile that lasts a lifetime. After your bite and tooth position is corrected you can reshape your canines and place two very conservative veneers on your laterals. This is a much more ideal treatment plan for someone your age.