I have a question: How do you attach a picture or phrase to the bottom of all your posts?

You mean a siggy? aka Signature.

Edited February 6, 201312 yr by Rainbow Dash

It's called a signature. Just go to your settings and look for the tab that says 'signature'. There you can put what you would like to appear under Ur posts.

Go to your profile

Go to 'Edit my profile'

Choose 'Signature'

Choose 'picture' 

Copy paste picture's URL there. 

Save changes

 

Sweet anthem of success 

Edited February 6, 201312 yr by dusk

go to your profile. Click on edit your profile. To the left is a signature button. Then put whatever you want in the box. In the case of a picture just get the link and put it between [*img][/img] without the asterick

Edited February 6, 201312 yr by Keysofblades