ps experts point out, how to get the physical photo into a hand-drawn design sketches

In fact, there are many ways, one of the easiest way is to use filters directly to do processing.

1, open the picture

2, select the filter - sketch - drawing pen. Numerical value of their own arbitrary adjustments, adjusted to satisfaction. Remember the foreground color is black background color is white, is the default on it. Tap OK to save it.

I hope my answer can help you.