Than you for posting your question and photos. First and foremost, remember that these are only your temporary teeth and most of your concerns can be addressed before getting your final teeth. One nice way to get a preview of how things will look before getting your final set of teeth is a "wax try-in". With a wax try-in, your dentist removes your temporary teeth and places a set of "wax try-in teeth" into your mouth. The wax try in teeth are basically a mock up of what your permanent teeth will look like. These are typically denture teeth set in wax and they look just like your final All-On-4 bridge. The dentist screws the wax teeth onto your implants and you get a preview of what the final teeth will look like. If you want to have changes made, that is very easy to do. The wax teeth are unscrewed and the changes are immediately made in the wax. Then the dentist screws the teeth back in so you can evaluate the changes. This is a nice technique because it allows you to evaluation lip support, face support, the amount of tooth show, confirming the midline of the teeth is in harmony with the midline of your face, etc. Also, it allows you to be confident that you will like your permanent set of teeth. Oh yes, you will never leave the dentist office with the wax teeth. They will melt! Your dentist will always put your temporary teeth back on before you leave the office. The wax teeth will then be scanned in a computer and duplicated into your permanent teeth. I published an article on this topic in the Journal of Cosmetic Dentistry in 2014.