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Usually, when you create a sample brush you want to make sure that you're avoiding any blunt corners, but there are times when you want to create brushes specifically for painting in corners and that's what this movie is about. So I have here a document and I've got four layer groups and each one has a different corner brush in the making. Now the brushes have already been made. I'm just going to run you through how they were made. So let's turn off three of these and we'll just look at the top right. This begins with just a grayscale image which I have rotated, positioned, so that I can get some interesting texture coming in off the corner.
And then I used my Polygonal Lasso tool just to isolate the rough region that I want to incorporate into the brush like so and copy that to a new layer, turn off the original layer. And now I'm going to just increase the contrast on that. So I'm going to come to my Adjustment layers and use Levels, pump up the Contrast.
Then returning to the image layer, I'm going to use the Color Range feature and I'm going to come and just click on those bright bits of the whatever it is right there, select that, and then I will use that as a layer mask for that layer and that's more or less what my brush is going to look like. Now if I feel that this edge is a little bit too well-defined, I might just want to choose a brush and I'm going to use a Spatter brush and then painting in black, just come and make sure I've got my Opacity up at 100%.
Just come and remove any regularity around the corner so it's not going to look like we're painting with a pattern, but we're really painting with something that is unique. The thing about the corner brush is that they will work on documents of roughly the same size. So I'm going to now select the pixels by Command+clicking on the layer Mask and with the pixels selected and with the layer thumbnail selected, I'll then come to Edit and choose Define Brush Preset, and then I can name it.
Now I'm not going to name it, because I already have the brushes prepared, let's now switch to a document and see how we can use them. So in this document I have an image that has a stucco background and this is applied using the Texturizer filter and I have a Gradient Overlay. Now what I'm going to do on a separate layer is I'm going to just paint in some corner deterioration. So let's come and choose my brushes and start out with the top-right. I'm going to choose Black as my Foreground Color and then just stamp into that corner like so, and then I would repeat this process for the other corners.
If you find like I'm finding that your cursor is a bit large and unwieldy, press your Caps Lock key and you'll get the accurate cursor that's going to make it easier to choose your brushes. So then we'll have the top-left and you can see sometimes you might just want to click a few times like I am doing with the top-left to build up some density with that and then the bottom -right and the bottom-left. Okay, now just to blend that in a little bit more, I'm going to do one more thing and that is I'm going to sample the color from the background and I'm going to apply that color to the brushes.
I want to protect the transparency here, so I can either lock it by clicking on that button right there, or I can hold down the Shift key while I'll press the key combination Option+Delete or Alt+Delete and that will fill it with the Foreground Color. Practically, making it invisible, but then when I change the Blend mode to Multiply, you can see that it brings it back quite nicely. So, as we have seen there are some sometimes when you actually do want to paint yourself into a corner. I'm sorry about the bad pattern, I couldn't resist.
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