I am waist deep in the production of the print edition of my newest novel Come Apart and my e-book only novel This Broken Earth. I planned to release both of them together, as I will shortly, probably the first of next week.
I took everyone’s advice about cover art that made suggestions, and now have the finished covers for both books to display on this post for your perusal. These are the finished products, and soon these two books will be available in print. This Broken Earth is already available, but the definitive edition (with changes to my female characters to make them stronger and more realistic, not so cardboard) will be posted with the print edition linked to it and vice versa. A Kindle e-book of Come Apart will be released with the print edition.
Look for both of these next week, and I will announce a huge promotion to kick them both off!
Writing Is Hard Work 
Cool! Good luck with your novels!
I like the artwork, but regarding the text fonts (especially on the newest book, “Come Apart”), I prefer to see a noticeable difference between title and author’s name. At the extreme, someone could read the title of the new book as “Come Apart Roger Colby” . . . the font is exactly the same size and intensity for title and author, and there is not even a ‘by’ before your name.
IMHO, since you are an up-and-coming author, the TITLE should receive the most attention, the greater emphasis. “Broken Earth” narrowly passes in that regard and “Come Apart” misses the boat. The actual font choices, however, are appropriate, inviting, and revealing of the subject matter. Nice job!