Alice, as Ken mentions. The shaving is something to into, if going that route.
As for performing another graft on this tree. Will be a bit more tricky as you do not have much root stock available before it becomes a bit large for nice graft.
Also, the branch coming off of the left side of 'V' portion is of the root stock. While central portion is of the grafted scion added.
Should end up with two different blooms.
Rick
