So you have this great shoulder patch, you spent hours perfecting it so it looks just so. You wanna give it to a ped, but there's a problem: its too smooth! it'll look like it was cheaply screenprinted on the uniform, and that's just not right.
You wanna give it a clothy appearance, like a patch that they sew onto the uniform. So first, you're gonna navigate to Effects>Noise>Add Noise. Adjust the color saturation to 0, and the intensity to anywhere between 5 and 25, depending on your personal preference. what you get should look something like this:
So you finally have the desired slightly rough, cloth look. But you're not done. You wanna make it look embroidered- real patches aren't just flat. They have bumps in the details and lettering, which are embroidered onto the base patch. So you're gonna select your patch (otherwise the background is gonna get the effect too) and go into Effects>Stylize>Relief and adjust the angle to 90 degrees. the result should look similar to this:
And voila! you're done! It has the bumpy embroidered effect AND the cloth look! It's realistic! You can finally save your work and put the patch on a ped.