How do I add a header to the contact form?
Just like Rylyn said you can use the #prefix attribute. You could change your form with the hook_form_alter:

 function YOURTHEME_form_alter(&amp;$form, &amp;$form_state, $form_id) {
    // replace the 'FORM-ID' with the actual id of the contact form 
    if ($form_id == 'FORM-ID') {
       $form['name'] = array (
          '#type' =&gt; 'textfield',
          '#title' =&gt; 'your_title',
          '#prefix' =&gt; 'your_text_header'
       );
    }
 }