@atomicpoet Now "retired" long time graphic designer/illustrator (now fine artist) here. I'm on Mastodon via my MacBook Pro.
So, FWIW, IMHO...
Too much space between the lines of your posts. Too much space around text/images in general. Serif typefaces easier to read than sans serif. I'd guess some folks find the posts hard to read. (I'd get a kick out of various instances each having their own choice of typeface.)Too much white space in general.
I'd be happy to throw in and help if wanted.