Hot to drip coffee well

I found a nice idea for dripping coffee.

Anytime, when I drip coffee, I'm worried about degrees of dripper.
Of course, when before start dripping, dripper has natural degrees. So I should warm up it by hot water. But that has 1 or 3 holes on the floor, so water droped when before dripper is warmed.

Now, I thought how to keep dripper degrees high. it is easy way that only set filter on before into coffee bean. because paper keeps hot water and degrees of dripper.
And it is more merit that filter's paper smell is cleaned by water.

I try it when morning, I felt coffee taste is changed well.