Hi, yes I do custom designs as well, here the links who I've been working with
Chronobank.io
https://bitgiftshop.com/shop/collaborations/

Shark Mining
https://bitgiftshop.com/shop/collaborations/shark-mining/

Vitalik Buterin aka Ethereum
https://bitgiftshop.com/shop/collaborations/chronobank/

Let me know if you want to create something unique for yourself