All on 4: Opinions and Critiques?

Authors

I just performed an All on 4 today. The Patient did not want to have a sinus lift bilateral and wait 6 months before placing implants, so i tried my best to obtain a good A-P spread so we minimize the cantivaleria. What do you think about the position of the implants,direction,angles? I want to become better by hearing from others that are more experienced than me. Thanks