A handy tip is to do some digging to find what style of tarot actually fits you. Some readers stick with traditional decks like the Rider Waite, while others prefer the imagery and vibe of newer decks. Also try out other divination tools like oracle cards - they can give different angles and sometimes reveal things tarot alone doesn't.
And ask your clients how they like to be read. Some people want a specific deck or method, others are happy to experiment. Make sure you feel comfortable with whatever deck you use, because your ease with it really does affect the quality of the reading.