How to put 3 pictures in the header?

Hello Yamid !
To put 3 pictures in the header of the DW Focus, You can log in to Dashboard > Widget > Add the “Text” widget to the Header section, the add the following code to the “Text” widget.

 <div class="row widgets-sidebar-header">
    <aside class="widget widget_text span3" id="text-25">
        <h3 class="widget-title">Sponsor link</h3>     
        <div class="textwidget">
            <div class="ads ads-60">
                <a title="Multi Grids Responsive with JigoShop" href="http://bit.ly/tf-wallclassic" class="ads-thumb"><img src="60 x 60.jpg"></a>
                <div class="ads-inner">
                    <h5 class="ads-title"><a title="Multi Grids Responsive with JigoShop" href="http://bit.ly/tf-wallclassic">WallClassic</a></h5>
                    <span class="ads-meta">Ads by <a title="Responsive WordPress Themes" href="http://designwall.com">DesignWall</a></span>
                </div>
            </div>
        </div>
    </aside>

    <aside class="widget widget_text span3" id="text-26">
        <h3 class="widget-title">Sponsor link</h3>     
        <div class="textwidget"><div class="ads ads-60">
            <a title="Responsive Portfolio WordPress Theme" href="http://bit.ly/cm-simplex" class="ads-thumb"><img src="60 x 60.jpg"></a>
            <div class="ads-inner">
                <h5 class="ads-title"><a title="Responsive Portfolio WordPress Theme" href="http://bit.ly/cm-simplex">DW Simplex</a></h5>
                <span class="ads-meta">Ads by <a title="Responsive WordPress Themes" href="http://designwall.com">DesignWall</a></span>
            </div>
        </div>
    </div>

    </aside>
    <aside class="widget widget_text span3" id="text-20">
        <div class="textwidget"><div class="ads ads-230x60">
            <a title="Responsive One Page WordPress Theme" href="http://bit.ly/ZgNf6q" class="ads-thumb"><img src="230x 60.jpg"></a>
            <span class="ads-meta">Ads by <a title="Responsive WordPress Themes" href="http://designwall.com">DesignWall</a></span>
        </div> 
    </div>
    </aside>                  
</div>

Notice: Please add our image to the Media, copy FILE URL then paste theme here: 230x 60.jpg /  60 x 60.jpg
Hope this helps !