Cherry Plum bonsai first styling

I collected these self seeded Prunus cerasifera  from a friend's garden less than a year ago. They had plenty of good roots and have put on tremendous growth, which has been cut back twice already. Confident in their vigor I've given them a first styling. They've got good genetics for bonsai, but need age and maturity that will take decades to acrue. I'll let them grow freely for the next year and repot in 2022, the wire will come off before it starts to bite in, perhaps in April or May.