Hi guys! I'm Salvador Ramirez, a conceptual artist in Mexico at Exodo Digital Workshop.
I just saw the amazing film UP! and the beautiful short film Partly Cloudy and almost burst into tears when I first saw the cloud characters of the second one (Fig.01 above). They were simply awesome! The render was just so nicely accomplished that I couldn't believe my eyes for almost half a minute ... so when I finally did, I thought to myself "I should figure out a way to at least render in Photoshop clouds like those!"
So this is what I came up with. It's pretty straight forward, so here goes:
First of all, you obviously need to activate your brush tool (Fig.02).
Go to your Brush Presets, open the "Brush Tip Shape" tab and select the "Spatter 59 pixels" brush (Fig.03).
Go down in the same tab and increase the spacing to 58%.
Open the "Scattering" Tab and change the values to: Scatter 121%, Count 6 and Count Jitter 7% (Fig.04).
Open the "Dual Brush" tab and select "Soft Round 75", then change the values to: Diameter 35px, Spacing 57%, Scatter 117% and Count 1 (Fig.05).
Now go to "Other Dynamics" tab and set Opacity Jitter to "Pen Pressure" (Fig.06).
You need to work with Low-flow, so go to the options bar and set Opacity to 80% and flow to 41% (Fig.07).
For the final render apply a "Gaussian blur" with a radius of around 8 (Fig.08 & Fig.09).
Remember that the above values depend on the size of your canvas. You may have to adjust them a little to work with different sizes.
Cheers! Visit my portfolio at www.reevolver.deviantart.com/