I think your articles are exemplary! Short paragraphs and several images makes them pleasant to read. I can't give you any suggestions on how to improve them.
What's really nice is how you use strong emphasis instead of second or third level headings. If the article is short and paragraphs too, headings often make the article look cluttered.
It seems like the image height restricts image size on steemit. If you use wider images they use more space horizontally and look better.