Before and After images created with my Photoshop Artsy Action that give images an Artsy Watercolor/Pen & Ink look.
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Some Tips:
At the end of the action, turn off all layers and adjust from the bottom up.
You may use levels to add more detail by moving the sliders to the right, but lower the contrast of the sketch layer using layer opacity from black to gray.
Finisher actions at the end:
One adds texture overall, and the other adds texture only to the image and not the background/paper.
The most critical part of the action is the cutout fade. I usually go up to fade-80%, but sometimes I lower it to 40% if the detail disappears.
The Hue/Sat seems critical too. The difference between 50% and 55% is huge. Sometimes going 56% loses detail.
Moving the Hue slider slightly to the right can bring out detail never seen before by adding contrast to the reds, adding subtle oranges and yellows to the lighter red areas.
If there is undesired detail in the black line layer, paint in the mask box with a low opacity black brush to soften the harsh lines (or remove completely with 100% bllack).
The very first stop that fades the diffusion determines the amount of detail or smoothness of the black lines when find edges runs. Move the slider to 100% for a softer look, or down to below 50% for sharper detail in the black lines.
I usually reduce Layer 2 / Overlay to around 15-20%
Layer 3 / Pin light is optional to add the black background back on.
You may want to keep the black shadows in the detail but not the background. Just add a mask and paint out the background.
After running the blur/texture action at the end, copy/paste the original color image back on top then set around 10-30% Linear Light, Linear Burn or Color Burn to add back some color and contrast.