@alwayswellwithin One option to consider is using the Footer Widget area as a housing spot for lists of links to your best posts. Duster's single posts and pages were designed intentionally to focus attention on the post itself. And thanks for letting us know about that image issue! We're taking a look at it.
@fineartfinds Is there a particular spot where you're running into trouble? To quickly review, you need a page that's using the Showcase Page Template (you can select it in the page attributes panel), from Settings → Reading you can select that page as your front page for your site. If you want the Ephemera Widget to appear on the Showcase you have to post short posts in the Link or Aside Post Format. If you want the Featured Post area to appear, mark one of your best posts as "Sticky" in the publish module on the Edit Post page. Adding a Featured Image will add a neat image to that post. Large images, 1000px or wider, will be full-width and smaller images will appear off to the side.
Whew. That's a lot. Again if there's a particular spot where you're having trouble, let us know about it and we'll smooth it out.
@writingtowellness Would you be able to give it another shot and let us know if you're still experiencing the same issue?
@ellipsis2creative Duster does not show a sidebar on posts and pages.