how to create homepage header block

Homepage header block appear just below the slider on homepage.

This region acts as a Drupal block region. You can create this block from:
Administration >> Structure >> Blocks


Step 1:

Navigate to: Administration >> Structure >> Blocks and click Add block

Step 2:

Create a new block with some content. You may use below sample content.

<h1>what we do!!</h1>
<p>We design beautiful high quality Drupal themes</p>

And set location of this block to Homepage Header region and click Save blocks.