Here are a few tips that’ll make creating a selection in Photoshop with the Pen tool much easier
When you’re using the Pen tool, use the Ctrl/Cmd key to activate the Direct Selection tool. This means points along the path can be moved as you go.
Also, if you’re making curved lines with the Pen tool, you’ll notice that each proceeding line created will bend in the opposite direction as the previous one.
Press the Alt/Opt key and click on the last point to reset the Pen tool back to creating straight lines, instead of curved ones.