If you don’t use pen tool often in Photoshop, then making path with pen tool can be complex and time consuming cause you won’t know where your next anchor point should be. You might end up wasting lot of time and yet get final path with lot of anchor points with low precision.
To avoid this, use Rubber Band option in Photoshop located in the drop down at the right of the Custom shape menu. Enable it and you get the preview how the lines and curves will line up while making selection with path. It makes creating path much easier and faster for anyone.