Sewing - Shortening sleeves?

When I change a long sleeve shirt to short sleeve, the outside of the shoulder hem sticks up when Im finished. When I cut and sew, it appears straigh

When I change a long sleeve shirt to short sleeve, the outside of the shoulder hem sticks up when I'm finished. When I cut and sew, it appears straight. How am I cutting wrong?

or:When I change a long sleeve shirt to short sleeve, the outside of the shoulder hem sticks up when I'm finished. When I cut and sew, it appears straight. How am I cutting wrong?

Tags:finished,