The big drawing looks more like a collage at this stage as I tend to cut bits out and try out new positions then stick them back on again. When I am happy with how it looks I use parts of the drawing as templates to transfer the outlines onto the surface of the wood. Then, at long last,it is time to get out the chisels and gouges and set to work on the carving. I use just the same sort of tools that we used for making the woodcuts in school. I just use the bigger sizes for the early stages of waste removal as I set each element into the wood. I gradually work out the various levels of the design and cut deeper into the boards.