I would work on the way you arrange your characters' faces though; on some of your pieces the characters' eyes and mouths are too large or positioned strangely. On others they are fine though, so also work on your consistency.
But I especially like the way you do hair. It's something I always have trouble with. lol
Oh, apparently you just described anime 555kkww
Infact there is mangaka that draw the same.
A new artist draws Animedysmorphia, many see it as undeveloped art.
When a Professional and renown artist draws Animedysmorphia,
they are redeemed by the compliments as geniuses and original style.
Welcome to the art world~
these are one of the cases, where I cannot really suggest they need to work or practice,
because looks like genuine Mangaka work to me. If the style was not a dysmorphic art style such as anime,
maybe the case be more apparent towards advice. Here though I see very rich work, the lines breath with
great spirit and heart...
form is not of importance, over the capture of the spirit of the given subject.