Thanks for posting your query.
Good to know that you have got a great new smile :) It must great to have no braces in your mouth now.Remember to wear retainers though it is very important post removal of braces.
Coming to your query, I understand that you are not happy with the shape of your right front tooth. When you mean shape, do you mean that is tilted? or do you feel it is bigger than the adjacent tooth?
You can go to your dentist
and if it is a minor correction like slight trimming or rounding off the edges of the tooth you will have no problem with your present retainers. For anything else your dentist will examine you and tell if what best can be done.
Hope that answers your query.