Custom Tarot Decks

Hello,

I am a playing card creator and my team and I have noticed that our designs are always said to be great for tarot decks. We don’t see it personally but others do. We have been asked to design tarot decks but we aren’t really familiar with the pictures and meanings. Can anyone offer any input on what tarot readers look for specifically in a deck? Can the images be of anything as long as the overall meaning remains the same? Any insight would be very helpful