Personally I think adding Japanese tattoos to it wouldn't combine well. I would definitely stay with old-school for the whole sleeve.
I think you best add as many individual small old-school tattoos to it, up until there is almost no blank space. Just tight them all together.
Find a good old-school specialist tattoo artist that you can trust and let him play with the blank areas.
I would also recommend you take a look at some old-school sleeves just so you see what I mean (many of them have no backround) and create a vision of your own.
https://www.google.com/search?q=old+school+sleeve+tattoos&client=ms-android-samsung-gs-rev1&prmd=ivn&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiM5brNnNLiAhXQPOwKHYFJBPcQ_AUoAXoECAsQAQ&biw=412&bih=722
yeah, you still have room for some more American traditional work, but also, some American traditional cloud backgrounds could work too, once you've filled out some more images
Art is subjective, so no there is no perfect tattoo. Very early on my artist told me that if you look hard enough you'll find something wrong with every tattoo. He said step back and look at the big picture. I can honestly say I enjoy all of my tattoos and I don't look at any of them under a microscope.
Hi! I’m psychic. The answer to your question is: “Your tattoo needs 4-6 weeks to heal. “ J/k But the vast majority of first time posters ask: “I had a tattoo done a week ago. Why does my tattoo look like.... Is something wrong with it?”
Welcome to the family of LST!
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