We all have that pile of ready-to-wear (store bought) items or past makes we need to tweak or fix.
Don't be afraid to fiddle with your garments if they're languishing in your closet. It's a great opportunity to experiment, and try to figure out fit issues with less risk - as long as that garment isn't getting worn this gives it another chance!
I addressed a huge pile of makes that I haven't been wearing. Some i converted from dresses to tops, others I scrapped back in to fabric. I fit some better, one went from a raglan pajama top to a strappy camisole!