can i get a fit check on this jacket?

just got from ebay. i like it, but it feels like its just on the cusp of being too small. specifically the length in the back given the elastic band on the bottom. i think shoulders and sleeves are fine though? would be hard to wear much more than a tucked tee underneath. between that and the amount of wear and tear, i might return it. but would love some feedback on the fit and jacket overall