Hi - It looks a bit as if the jacket is simply a "small" version of a normally proportioned jacket, rather than a normally proportioned jacket but with a short skirt and vents as most 60s jackets were. The pockets should still sit level or a little above the belt, and the jacket should still have a normal (even low) waist and a button stance which matches that. If the button is too high then a short jacket will "come in", end, and sort of be left hanging. Particulary...