poor work; humble reference to one's own work
拙作ですがお目通しいただければ幸いです。
It is a humble work, but I would be grateful if you could take a look.
拙作をお読みくださりありがとうございます。
Thank you for reading my humble work.
この拙作が少しでもお役に立てば嬉しい。
I would be happy if this humble work is of any help.