I posted this on googlecommunity and saw that people here were still asking for a photoshop tutorial. Please read the following to make some good images.
Lightning
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1. Make new image any size
2. COLORS SHOULD BE SET ON BLACK AND WHITE (you can edit this later)
3. Filter > Render > Clouds
4. Filter > Render > Difference Clouds
5. Ctrl-I (should invert the colors "black becomes white")
6. Ctrl-L (should come up with a graph thing and 3 arrows at the bottom)
7. Move ONLY the middle arrow to the right and hit ok
8. Ctrl-U (Check in the box so it says colorize)
9. Move the arrows anyway until you get the color right
Metal Dents
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1. Make new image any size
2. COLORS SHOULD BE SET ON BLACK AND WHITE (you can edit this later)
3. Filter > Render > Clouds
4. Filter > Render > Difference Clouds
5. Ctrl-I (should invert the colors "black becomes white")
6. Ctrl-L (should come up with a graph thing and 3 arrows at the bottom)
7. Move ONLY the middle arrow to the right and hit ok
8. Filter > Stylize > Find Edges
Chrome
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1. Make new image any size
2. Filter > Render > Clouds
3. Filter > Render > Difference Clouds
4. Filter > Sketch > Chrome
5. Ctrl-U and check in colorize (optional)
6. Choose the colors you want
Smoke
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1. Make new image any size
2. COLORS SHOULD BE SET ON BLACK AND WHITE (you can edit this later)
3. Filter > Render > Clouds
4. Filter > Render > Difference Clouds
5. Ctrl-I (should invert the colors "black becomes white")
6. Ctrl-L (should come up with a graph thing and 3 arrows at the bottom)
7. Move ONLY the middle arrow to the right and hit ok
8. Filter > Stylize > Find Edges
9. Ctrl-I
10. If it doesn't look like smoke then mess around with the filters until you get it.
Pixel Blast
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1. Make new image any size
2. Filter > Render > Clouds
3. Filter > Pixelate > Missotint and choose short lines
4. Filter > Blur > Radial Blur and copy these settings
5. Ctrl-U and choose your colors
3-D Grid
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1. Make new image any size
2. Filter > Render > Clouds
3. Filter > Pixelate > Mosiac and set the top number to 20
4. Filter > Blur > Radial Blur
5. Filter > Brush Strokes > Accented Edges and set the numbers to the following:
6. Hit ok and go Filter > Stylize > Find Edges
7. Ctrl-I
8. Ctrl-U and choose the colors you like
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