Problem Description:

By default th Knead portfolio has a sidebar description.

To get the images to be full with on the portfolio page actually takes quite a few edits.

Answer:

  1. Go to Theme OptionsGeneral
  2. Add the following to the Custom CSS box
.portfolio-content #left-column, .portfolio-content #right-column{width: 100%;}

You can hide the content area so only the image/slider appears:

.portfolio-content #left-column{display: none;}

To reverse the order, you need a child theme and to change the order of these two columns in the single-portfolio.php