Nice job! I like to use skate board tape under my wraps when possible to keep the cord from shifting or as long as your knife is stainless steel try dipping the wrap in boiling water, it will shrink the cord down tight and when dry typically your handle wrap will be "rock" hard..
Another "base" Ive used is liquid tool handle dip let it cure up all the way and the cord will bite into it. when the cord is removed you have a textured rubberized handle left in place. I haven't THUS FAR (over 5 yrs) had any issues with any that Ive unwrapped, becoming stick or tacky residue wise. Ive been watching for it (never know) if it happens, a wrap of cellophane or saran wrap can be added. but like anything that hasn't had a decade to prove, time will tell. We have seen grip tape slip over time, no difference here. Just a point we all need to keep in mind.