Now that you have learned the basic tools - using adjustments and effects, adding text - it's time to try these techniques with photos of your own work. There is absolutely no reason you can't make striking designs that will set you work apart on social media and in your marketing material if you are ready for that kind of thing.
Hint: You may find that you like using Photoshop Elements to take photos of your work, then adjust the images to see what they would look like with more red, or more light in one area, or even cropped! It's a great way to preview before you commit.
Here's how I practiced with one photo from an assemblage.