Choices:
(I) Cut it down the middle or take it out according to your taste. Cut off outer " branches " of the tree..
(II) If it is going to be climbing, place it 1 to 2 inches below the ground. Measure out 1/2 to 1 inch on each side of the tree..
(III) Split it into two halves with a sharp pair of scissors. Plant the two halves in the ground around the trunk of the tree..
(IV) The size of the branch can be up to the diameter of your little finger. There are many possible cultivars of japanese maple..Choose from options above and answer: What most naturally follows?

How to make a japanese maple bonsai tree
Take a softwood cutting of your chosen cultivar of maple in early summer.
Maple trees are easy to grow from cuttings. Select a maple tree branch that is appealing in shape.
Answer:
(IV)