I have always been a really good artist.
That's awesome. It's interesting how a drawing instrument leaves behind small particles that can create beauty.
Yes I never really thought about it that way!
Temporary drawing can be make on almost anything too!
What kind of drawings are temporary?
I'm not sure to be honest. Maybe they are drawings that can be added to still.
Yes maybe. or they are like chalk drawings that will wash away with the rain.
I guess if you really think about it everything is temporary in that sense. 
Yes, unless it is carved into stone.
That's probably the oldest form of art.