Today, the 3rd and final book in the Draykon series went live and I had the honor to make it's cover book along with the covers for the other two books in the series.
The book is available here: Smashwords: [link] Amazon US: [link] Amazon UK: [link]
For more information about books by Charlotte and Orlind's release go to: [link]
Charlotte is the co-writer of my web-comic: Spindrift which you can find here: [link]
The other covers; Drakon and Lokant:
If you are unfamiliar with the Draykon series, I recommend starting with "Draykon" the first book, or you can check out Leximandra Reports, a free e-book with several short stories introducing the world of Draykon and many of it's characters: [link]
There's no -one size suits all- in the case of book covers. It all depends on what your friend is using as publishing platform. If it's an e-book, you'd have to look at the most common specs of e-reader devices. If it's going to be a printed volume your friend will have to give you the dimensions of the book size he has in mind. I hope that helps .