Hey Todd,
Welcome to the challenges. I'm so glad that you asked for constructive feedback because sometimes I know that I could offer suggestions to improve a course, but I don't want to discourage anyone, especially a newbie. I've worked in design and can give you a few tips to improve the look of this course.
1. Don't center all of your text. Look at how text is laid out in a book or a magazine, sometimes the title is centered, but the text is usually left justified. Left justified text is easier for your learner to read.
2. Resist the urge to put boxes around everything (especially text). A page of text is less overwhelming and easier on the eyes when there is some empty space around it. Get layout ideas by taking out a design book from the library. Magazines and websites are great resources too. Develop a good eye for design, take note of what you like in a design and use that in your projects.
The best way for anyone to improve their work is to be open to feedback, learn as much as you can absorb on your own and incorporate that into your projects. Remember every Articulate user here was once a beginner.