I see in photo 4 you have established the neck profile at both ends. Do you have a template to do this? Or??For yet another variation, here is the sequence that works for me.
How does your sequence vary if you are binding the edges of the fretboard?
-- se
The bound fretboard would be glued on and fretted as per an unbound one, bar the additional hassle of cutting back the fret tangs!