I think you definitely have a start :> TBH i think your skirt could use more poof, but i'm very much a sweet lolita so that is probably why. I suggest you maybe tuck in your blouse farther, and move the skirt up a bit, because with the blouse puffing out like it seems to it looks a bit frumpy.
I think you could maybe add some more accessories in, some bracelets, rings and a necklace, or a pair of wristcuffs to spice up the outfit. Also, it'd probably help to tailor the sleeves on the blouse a bit to sit higher on the arms, but it's nothing major
Overall you definitely have a good start, i think with a bit of tweaking this could be a good basic Kuro loli outfit :>