Sometimes veneers are seen to be thick.
The thickness often appears on the edge of the tooth. The cause of this are twofold :
1. The veneer may be thick. Veneers now can be made very thin ( 0.3mm), especially when using variants of EMax porcelain.
2. The edge of the tooth may not have been finely adjusted to allow a thin veneer edge
The solution often involves the replacement of the veneer and is normally possible for most patients.
To understand your specific need and possibility, it may be worthwhile booking an appointment to see the cosmetic dentist.