Its very simple and effective to sew a simple reverse cuff turn up on your 50´s dresses.
Cut out the cuff the depth you want it using the bottom of sleeve for a guide if there is any curve or flare to the sleeve it needs to be matched. . The piece will be on the outside therefore you need to cut it slightly wider than the main sleeve so it has enough ease to sit smooth and not wrinkle the main sleeve. As usual make aa mock up and baste to test.
Starching the new cuf or lightweight interfacing on very light fabrics will give it some substance to hold shape.
Sew right side of cuff to the WRONG side of main sleeve, matching underarm seams.
Sew the new cuff piece at the underarm seam and press open. align to main sleeve and sew edge. clip / notch seam if needed and turn cuff back.