Duplicate layer and change layer mode to "Linear Dodge".
1. CREATING PAINTING LOOK FROM AN IMAGE
Duplicate layer. From "Filter" menu select "Sketch>>Photocopy". Apply settings as shown.
Click add layer mask button from the bottom of the layer palette. Apply a black to white gradient in linear mode to create a smooth blend.
Change the layer mode to "Overlay" and opacity to 50%.
2. APPLYING MONOTONE
Select and merge all the layers. Press Ctrl+U to open hue / saturation window. Apply settings as shown.
3. THE FINISHING TOUCH
Duplicate the layer. From "Filter" menu select "Blur>>Gaussain Blur ". Apply settings as shown.
Change the layer mode to "Color Dodge".