Lovely work, Duncan!
I took the liberty of fixing your image links for you. The forum software no longer supports bbCode (the stuff in the square brackets), so you only need to paste in the direct image URL now.
So instead of this:
[url=https://duncanblack.smugmug.com/Box-art/Edit/i-vhmdK7b/A][img]https://photos.smugmug.com/Box-art/Edit/i-vhmdK7b/0/MZ4K8nhBNm4K7WLjPRK8Xh883GSmPvF7fjgC9pLDz/L/IMG_1978_zps6vdg9iwd-L.jpg[/img][/url]
... you just need this:
https://photos.smugmug.com/Box-art/Edit/i-vhmdK7b/0/MZ4K8nhBNm4K7WLjPRK8Xh883GSmPvF7fjgC9pLDz/L/IMG_1978_zps6vdg9iwd-L.jpg
Kev