3/4 sleeves are the epitome of aesthetic beauty in Japanese tattooing. Pick one motif, and have a specialist in Japanese tattooing design your sleeve.

IMO Simple traditional Japanese is the most authentic and beautiful style but some people prefer more modern styles. Choose which ever style you prefer.

For your arms just go with one theme, if you like Koi then have Koi, they can be paired with momiji swimming upward, one koi can be paired with botan, sakura is another option.

Cranes go with botan, matsu or sakura. As they are an Auspicious animal they are often depicted with other auspicious animals, most harmoniously with a Kame (turtle).

A classic combination with a geisha is sakura.

There are numerous other Japanese options which I am sure you are aware of from Buddhist Kannon to mythical creatures like Karajishi, Kirin and Baku.