As well the very specimen I have shared has a spiral/curved ideal shape and on this very site specimens with this shape are shown and referred to as bonsai under the popular trees section.
IMHO, bonsai resembles a full sized trees that was grown to reflect results from natural condition, ie trees growing on mountain, high wind, lightning strike or competition for resources, although bonsai nowadays comes with various forms and styles. There are no trees grow in perfect S shape and that is why there are no great bonsai or even bonsai in exhibition or competition you can see the perfect S form.
I have already prepared some cuttings and stimulated them with hormone, hopefully they take well. As for updates, maybe but unlikely as growing, manipulating and managing (through pruning and wiring), a tree in a small restricted space under 4 feet in high is appearantly not bonsai according to some.
Tree less than 4 feet with good structure is shohin or mame bonsai that it could sit on your palm too.
I would suggest you to grow the cuttings until they rooting well and you satisfied with the trunk thickness. Branches, wiring, styling come later (minimum a couple of years, depends on tree species and other conditions). Water them only when needed and protect from direct sunlight. Pot size shouldn't be too large as this can retain unnecessary water for a very long period. Do the basic gardener task first, when material is there you can switch title to artist.
Hope you are aware that cutting does not guarantee 100% rooting success. Be patient, stay on track and good luck!