I am trying to give a Stroke color and thickness to a silhouette I did with the Pen tool.
The problem is the layers in my artboard are set as Pixel layer whenever I add a new one and it will not let me modify the stroke of my shape, I can't find where to change the layer type anywhere, not even in properties. I understand it needs to be a Shape layer not pixel.
Pray that you have saved the Path with the file. (Path Palette > Double Click to Save the path). If you have saved it you can create the shape layer based on that path.
If you haven't saved the path and closed the file after filling it with the Edit > Fill tool, you are left with limited options.
You can select the silhoutte with magic wand and create the path from selection followed by the shape layer from that path. It is not as neat (as you might expect) but you can tweak it to make it smoother.