I didn't explicitly said a time frame to execute the work (my bad). I don't expect problems, but most of the time it is best to perform big bends in late fall or early spring. In summer there is a lot of sap in the branch and heavy bending might separate the different layers. I also see the lowest right branch is removed. That was a good branch (viewed from the photo) and is also included in the drawing. Having a branch there helps explain why there will be taper in the future there.
My plan would be:
Now: I would just wait for the reaction of the tree. The top should take off, some extra growth on the lower growth will occur.
Fall (after growth stops and needles fall): Take off the wire. Rewire with even intervals and around 45°. The wraps around the runner are perfect. Lower down on the main trunk they are too narrow, on the next trunk section they are too wide. The wire should have a snug fit without gaps. I bet you can do better than this. The purpose of rewiring is to add movement. The main stem of the daughter is OK but you can start with the primary branches in fall. When the tree grows the bends will always disappear a bit so always exaggerate the bend. For the continuation of the main trunk i would bend the branch up a bit more and add slight movement so its not straight like now. Try to bend so every branch is on the outside of the curve. The tuft of foliage halfway up the next leader might be the future elongation of the trunk. Use the lowest bud on the right to grow the first branch. You need counterbalance in the design.
Spring: The tree seems to be in "fresh" soil, when have you repotted, how does the base look like, what work do you need to do to make it perfect? Best to leave the tree in pot for 2 years before digging in again.
The most difficult part in bonsai is seeing what's not there yet. You have to envision the thicker trunk, the slight movement, the foliage pads. Look for examples. Starting from raw material like this is one of the hardest things to do and to start with. The tree might direct you to make other decisions than you anticipate. It is easier when you have a finished trunk and have the primary branches. The nice thing of having a mother and a daughter is that you will have the daughter ready much faster than the old lady. You will have trees in different stages in the same tree.