That is fixable.. You need someone to thin it out a little more when dry to try and match that back up better. Also, you probably want to invest in some Xfusion with the sealer spray (it's a concealer that is a powder). This will help the thinning sides and back tremendously. You can wear a topper real short with thin sides and back.. but you have to just thin out the sides and back enough to match up, plus sometimes use some concealer.. I keep my hair real short on the sides, and back #2.. and it looks fine. Sometimes, when it starts growing out, I use the Xfusion to help.

Buy a knot bleaching kit to hide the knots... can't tell from that pic.. but you may have to move the hairline up a tiny bit like some said on here. You can kind of judge whenever you are putting the piece on w/o glue or tape..

I won't go to a full cap b/c I like shaved sides/back hair.. I hate any hair on my sides/back.. I like it real short, but sometimes with some length on top so I can get some spikeness going. My hair is almost as thin as yours side and back (I'm 31).. I started using minoxidil again just on the sides/back to try and keep, and possibly thicken it up a tiny bit.


Anyway... the good things is that you are showing scalp.