How do you blip downshift?

I tried watching yt vids on it, but I found all the vids to be pretty unhelpful. It's just dudes being like "do this" and then they do the thing and it's over literally half a second. It also doesn't show when they're shifting since there's no camera on their foot. So what's the process like? From what I understand, it's pull in clutch and as soon as power is disconnected from wheel you blip the throttle about 1/4 in and as you blip (as in the bike is at its maximum rev point from the blip) you down shift and then let go of clutch all within the span of half a second or so?