Finally I joined the chemistry group as a first year graduate student, and I want to write email to group members, I really want to say "
Even though I have a lot of room for improvement", but I don't know if it's appropriate to say. I don't want to look too timid or in-confident. Could you take a look? Thanks.

I deeply appreciate your greetings, professor
Hi everyone,

This is --- and I am really happy and excited to join your group. I am a first year graduate student in the University, and as professor said, I plans to work on -----. Even though I have a lot of room for improvement, I am looking forward to working with and learning from you, and hope I can be a good group member and a friend of yours.