RESIZING PATHS THE EASY WAY

When you're using the Pen tool, you can visually resize your path by using the Path Selection tool. To do this, go up in the Options Bar and turn on the checkbox for Show Bounding Box. This puts a Free Transform-like bounding box around your path, and you can use this bounding box to resize your path by dragging the handles (remember to hold the Shift key to resize it proportionately).