Hello and welcome to the forum!
Can I ask that you please don’t create duplicate threads in multiple areas of the forum, one is enough thanks.
As far as your tattoo goes, I highly suggest finding a great artist and asking their advice on how to expand your tattoo. We can give you some ideas but a competent artist will know better than we will what will work best and what fits your needs.
Doesn’t cost you anything to walk into a shop and have a chat.