Whenever the straps on a tank are too long, I just take a little tuck at the back right at the place where the strap meets the shirt. Sometimes I don’t even trim it off (so if I pass the shirt down to someone else, they have the option of getting the longer strap back). But Crafting a Green World has a cooler way to fix a strap that’s too long. They take it off altogether and replace it with a contrasting strap that’s the right length. I love it! Go to their tute to see how it’s done.
[photo from Crafting a Green World]