That looks good, undetectable
Not trying to be a dick fan, but your piece looks fake as heck.
As Noah and I said earlier, graduated hairline is most important. I believe you should also go down a system in density. If it's mediumn, go light medium and so fourth.
Another thing. Get a high fade so your temple points are more shaven down. THe excess hair at the top of a high fade will blend in wth a system while the hair around neck, ear and.nape is faded. Your temple points are still there but yy can see they are balding to form a parallel side. Eventually that will be the case.
High fade is a great way to blend systems while having a short and professional back and sides.