Yeah it looks good. Nothing to worry as of now as the photos looks good, just visit 6 monthly for a routine check ups and do floss around the teeth to make sure everything stays well for a long time. Incase of any issues you can vist or doctor even before that. But once in six months to one year is a usual recommendation
Canine are usually not extracted unless there is a major issue, advice to follow as per your doctor's advice. if he advises to replace plan it accordingly. but its a usual advice to not get the canines extracted unless nontreatable..
you can stop using those retainers as it may not fit. it is advisable to get a new retainer made, as this may cause pain, hurt and sometimes cut on your cheeks and gums
An orthodontist is the best person to correct the bite with braces or any Invisalign certified dentist can also do that for you. After that is done then consider veneers. Some time these issues are minor and can be taken care with veneers too.
Veneers or composite resin bonding are the options to improve yor smile. It can definitely improve the colour and arrangement of your teeth
