To continue drawing your path or shape, simply click to double-click on an existing curve. But as we'll see, it's an existing anchor point with Tool works, let's set things select it, and then dragging clicking the gear icon in.
Then, to reshape the path, I'll drag the new point into the upper left corner where the grid lines intersect:. Next, click where the top horizontal guide intersects with the second vertical guide from the right. The path now appears as a vector mask, with only the area inside the path visible. Since we've drawn a heart shape, I'll choose a shade of red.
