Carousel Dress – Sleeve Dart

I'm running into difficulty sewing the sleeve dart on page 7, step 4. If I sew the "V-notch" with a 1/2 inch seam allowance, I do not reach the dot. If I sew a line beginning with a 1/2" seam allowance at the neck down to the dot, it doesn't appear to match the first diagram (and looks wonky). I think I'm just missing something very obvious. Any help would be appreciated!