For anyone interested in doing a spot color picture, I'm sure PS has many ways to do it, and here is mine:
1     Open the photo in PS and duplicate the layer.
2     Convert the duplicated layer to B&W.
3     Zoom to 500% and use the Hand tool to move around.
4     A     On the B&W layer, use the eraser as a small brush to go around the edges where you want color.
       B     Use the eraser as a larger brush to fill in the rest of what you want.
5     Zoom back to 100% to see how you're doing.
6     Flatten layers & save with a new name.   

Then, post and show how it worked for you! (If anyone has another way, that would be good to know too.)