I've always enjoyed stretching canvas; it's a very satisfying procedure.
It was my favourite, and most successful, chat-up line at college "May I help you with that; you look as if you might be having problems". Worked a dream!
I use quite a heavy white Cotton Duck canvas, and once stretched the canvas is given a coat of white emulsion (or two), then later given a thin wash of Burnt Sienna to take away the newness. Painting over a warm, rather messy, background takes away any reluctance one may have about making that very first mark on virgin ground.
So, here it is; another canvas all ready for daubing.