I vote No.
If there is an issue where one has gaps between the teeth within the smile zone, or have discolorations and the teeth aren't esthetically pleasing, only then are veneers advised. You don't need to undergo this procedure. You have a very esthetic smile and are too young to consider veneers.
Next Steps
However as you said you want to add a tooth, my mind goes to thinking, if you have an unwanted space after your braces treatment. Check with your dentist, if the gaps after your canines are too much(it is not very clear in the picture) and can be closed with implants(surgical placement of teeth)
Health Tips
Avoid anything unnecessary and plastic. You are your own beautiful. :)