The only thing that concerns me now is the actual formatting of the article and the cover art. I'm not too good at the latter although I know you can use the standard Kindle art for this. I would prefer something with crossed checkered flags.
I can’t help you with Kindle art, that’s for sure. I think JPGs are standard fare for uploading to Kindle. So anything you can swipe, alter (hiding the origins), and convert to a JPG should be good to go.