Well I don’t know how to explain both of those as they’re spontaneous. Sometimes I draw in the middle of a movie, sometimes on the commute from work, it’s not something that can be explained, I imagine things and then start scribbling on all sorts of materials (notepads, coffee receipts, walls, margins of books etc.). I have been constantly drawing since I was 4 years old so I’m not really aware of the mechanics.
Photography is a bit more deliberate, I take pictures when I go for a walk. I like the works of HCB, Steve McCurry, Robert Capa, and their work is very spontaneous. All of them describe their process like this: you go out and take pictures, if you have to frame it differently, then take another shot, there’s no cropping. And if your pictures aren’t good enough, you’re not close enough.
If your pictures aren’t good enough, you’re not close enough. – Robert Capa
And in my experience you have to take a few shots 30–40 every time, before you start feeling the pictures and then you make a good one. You have to give room for the spontaneity to grow.