I’m not very good at explaining things, but I’ll try.

I screencap from my DVDS, that helps since they’re decent enough quality. But if you don’t have the Charmed DVDS you can download Charmed episodes online. If you’re going to download them, you need a decent enough quality to screencap from, because if you have like say 360 quality, it’s going to come out blurry anyway. You want to look for 720 or 1080 they’re the best quality you can get.

Whatever PSD I use to color the GIF, I always make sure to add/use Curves since they bring out the gif more.

These are my sharpen settings,

Hope this helps.