An extract from my sketchbook.
A method that I often use is to outline a 'picture frame' of the image and paint it like it's a large painting in a gallery. For some reason this method will often produce ideas I hadn't contemplated.
The sketchbook I use is Daler Rowney Ebony Artist Sketchbook 150gsm. It's a great little book as it takes watercolour reasonably well... I can only buy it in the UK though so postage costs a bomb!