I also shortened some sleeves. On many store bought t-shirts with long sleeves, I have to cut off 4 - 6 inches for the sleeves to end somewhere near my wrist!
I put put on the blue shirt I am working on an spent some time in front of the mirror, considering how to proceed.
I cut out four pairs of underpants to finish this weekend.
I considered getting around to unpicking the sleeve hems on a blazer I bought new for $4 for the precise purpose of learning to shorten sleeves with a lining. The thing has been hanging in my closet since April. I keep thinking about it, but never quite get around to working on it.
Hopefully, this weekend I will have more energy to actually complete something.