Posting a lot this morning, because I have a lot on my mind.
I've found that sometimes cap/short sleeves can work, yes, even with my strong shoulders and undefined upper arms. I am trying to figure out why that is, and would love to hear your thoughts. Do you own a short sleeve/cap sleeve top that somehow seems flattering even if - theoretically - it shouldn't be?
For example, I bought a blouse on sale at BR this weekend. The sleeve hits about an inch or two down from the shoulder - exactly where you think it would be least flattering. Except, it has elastic around the arm sleeve. Not tight elastic - loose. So to my eye it seems to make my upper arm - which is by no means slender - seem more slender than it is. If the elastic was tight, it would not have this effect.
Your turn.... what subtle details have you discovered make cap/short sleeves work for you?