I know now that you need an overlay if you want it to look like blush on your character. But how do you let the ‘blush’ fade in. I hope you understand what i mean lol.
thats not possible
If you want to do it you need to find a blush overlay
You’ll need to use RED COP LIGHT then shift it to where you want, I believe you can change the opacity but not fade it in nor out.