It's really looking good! I would try to get all the lower branches to bud closer to the trunk (as close as possible) so you can get some bend in the branches really close to the trunk. In the meantime, go read @grouper52s resource here:
https://www.bonsainut.com/resources/the-fine-art-of-baby-bending.13/
I am thinking a really gnarly, spooky silhouette in a few years! Maybe get that top carved out so it can roll over? Looks good man!