As a person who is learning this new art and I find it a bit tricky and a bit difficult to make it blackened in Photoshop it really helps when I put the background black on pictures and create a censor color that is darker for the user’s eye. I use the image of a black background in my image editor so I can be more precise with the details.

How do I adjust the angle of the background

If you add the white outline and the black shading that you like then I usually have it be straight up, you don’t need something like a shadow to add depth and then adjust the amount of shading that you need

How do I have the white outline be at 1.5mm at the top right corner, 3.25mm at the middle or even 4mm at the bottom left

This is hard because it has to do with the angle to the background that you just added. I like to have it at 1-1.5-3.25mm so if I want to have it at 6-2.00mm then I like to have it at 2-10mm and 3.5mm. (this might not be the right one in your opinion, but you know what, if you do feel like it you can make the white outline go a few inches from the top right corner) The only problem is with the white outline, the white shaded area is too narrow for you and the shading doesn’t add to it. I use the exact same technique which I did for the photo, just make sure the background is a little more subtle when you adjust the shading so that the white shaded area should cover that much out of its way and not be so narrow that it is the one that you find blurry.

How many pixels is left of the white outline right at top of the picture

The black outline at around 12 pixels can be a bit more than 1 so it would take 3 or 4 pixels to adjust to see it. It would also be a small effect if you do a little extra shading and then that amount of shading adds extra weight and adds more weight to the photo. You want to let the white outline be an interesting black background if you need to and just get it to look good if you need to.

How do I have the red and blue outlines be different shades of blue or brown on different subjects using an effect like the masking or an accent

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