long, but it can be any size you wish.
don't forget, when sorting out sizes, that you need to allow for some extra to mount the block onto your clamp or into your vice. in this case it has been added to the bottom of the neck and will be removed when the carving is finished.
in general you should expect to have the thickness of your block about a third of the proposed length of the head so you can make it whatever size suits your timber.
once this has been sorted out, copy the basic pattern and transfer it to the wood by either cutting out the pattern in card and 