手備斗 (hand-preparation-)
明日照主 (tomorrow-illuminate-master)

手 - dei - "hand"
備 - bi - "preparation"
斗 - to - no real meaning, but popular in men's hanko

明日 - asu - "tomorrow"
照 - teru - "illuminate"
主 - su - "master"

deibito asuterusu

"Doing things by hand (physical materials, not digital), tomorrow an illumination (art) master"