What required documents for line 2 of form 8885 do I need to send in, or am I just sending the printed form you gave?

You will send along with Form 8885 the following:

1. Fill out Form 8453 (make sure you check the box for Form 8885)
2. Supporting documentation for Form 8885

• An official letter reflecting that you were an eligible individual for the months claimed on line 2 in 2017
• A copy of your health insurance bills or COBRA payment coupons for each month you are claiming the credit on line 2
• Proof of payment for each month you are claiming the credit on line 2

After you received acknowledgment that the IRS has accepted your e-filed return, mail the above mentioned documents to the following address within 3 business days:

Internal Revenue Service

Attn: Shipping and Receiving, 0254

Receipt and Control Branch

Austin, TX 73344-0254