Upgrading Product Design

I bought my first backgrounds and borders pack today from RedPepper which I love :). I tinkered around and updated my cover for Realism, Naturalism and Modernism American Literature Teaching Pack. I may be biased, but I like the new look!

  It went from this:

To this:

I updated the product earlier in the summer to clean up some of the PowerPoint slides and check all of the video links. I've been finding it hard to find my "product style" as a secondary teacher so that it is still visually appealing and nice, but not too elementary looking. So far I'm liking this look and will update my other product covers over the next few days :). What have you done to spice up your own TpT products?