Full page image for Kindle

Hey there,

I have searched, but not found my exact topic. My sincere apologies if this is a post already answered. Just point me in the right direction.

I have several jpg images for my novella which I want to appear full-page (or thereabouts) in a kindle ebook. While the images look okay on my scrivener screen, when I export them they are tiny in the kindle previewer and on my kindle itself.

What I want is a full screen image. I know in kindle formatting, you can use the Image tag to do this. How would I accomplish this in scrivener?