@asiegel12,
The fact you are even asking the question puts you about 75% farther ahead than any of your peers. Doing ANYTHING, whether it be a formatted letter, memo, or email, would put you 80% ahead of your peers. While I agree with Chad that formatting a letter to AR 25-50 standards will go a long way to showing your incoming CoC you are a professional, however you reach out, just reach out.

I will admit that this is coming from a perspective where not much is expected from new 2LTs, however from experience setting that first impression is essential.

Brock