Hi Signe,
Welcome to Japan.
My name is Takatomo and I live very close to Shinjuku. In fact, I go to Shinjuku almost every day and I can come help you on 18th Thursday this week.
I am a freelance writer/blogger and speak English fluently. I do oil painting and also collaborate with an ecommerce company in San Francisco to create fashion and lifestyle products. So, I love doing creative things.
I took a furniture course years ago at a small school for only a couple months in Nakano, which is close to Shinjuku. For me, that's the only experience in furniture design. I was wondering, are you meeting someone from there?
Anyway, feel free to contact me if you have any questions. I am positive I can do a good job interpreting and help you.
Thank you,
Takatomo