The C cup on a size 36 is about same size as B cup on a 38. And if you go down a band size, you'll go up a cup size. Pin out excess on test cup, as shown at right, tapering to zero. Make same changes to pattern. Try going up a cup size or down a band size.
Larger bust needs wider, closer-fitting band to support weight of bust.
May be too loose or set too far apart for narrow or sloping shoulders. Adjust straps to give some lift to bust. If you like, stitch straps to stay in place. You can move the straps closer together in back, or choose a different pattern. Wider band and wider, padded straps help.