Please use the tag “Guest Post” so you also get featured on that special section. Please also use a picture in landscape orientation so it looks good on the home page.
In the past, I’ve also put “(Guest Post)” after the contributed title, so it’s obvious in the preview, and I think it looks good — but please let me know if you disagree. I also haven’t been numbering those posts, and I don’t know whether I should be or not. Have a separate guest post sequence? Continue the main series numbering?