Draw a long vertical shape with a wider top and narrower bottom
Make the top slightly curved and the bottom taper to a point
Add a small bump on the left side near the top for the northwest area
Add a gentle inward curve on the right side in the middle
Extend the lower right side outward slightly for the southeastern area
Shape the southern tip into a small pointed end
Keep the outline uneven and natural instead of straight
Compare your sketch with a reference map while drawing
Lightly sketch first, then darken the final outline
Erase extra lines after finishing the shape