Brush: showcase, Modify Custom Modul: Our Work

How is it possible to add pictures and change the text in the "Our Work Module) Position Top-C
I am not a tech guy and I don't know how to program.
-> Is there a way to add/change pictures, edit the text in a more simple way for a non tech guy?
-> I use Tiny MC or the default editor.


When I go in the Module, I see:
<div class="uk-text-center"> <h1>Our Work</h1>
<h3>Check Out Our <em>Projects</em> below </h3></div>
[showcase source="category: 11" limit="6" show_more="yes" show_more_item="3" loading_animation="sequentially" filter_deeplink="yes" page_deeplink="yes" filter_style="2" popup_category="no" popup_date="no" popup_detail_button="no" medium="2" large="3"]

Hi there,
1.) This text can be changed by you

<div class="uk-text-center"> <h1>Our Work</h1>
<h3>Check Out Our <em>Projects</em> below </h3></div>

2.) The other things are done by ultimate shortcode plugin and must be done like that.
bdthemes.net/demo/joomla/shortcode/en/shortcodes/showcase.html
And the showcase take the fotos and text from a Joomla article category