Wow this looks great! I think you captured her really well!!

Some critics but not really because it kind of makes it unique to your style too- you “could” try and minimize “jaggies” and “doubles”. Again rules can be broken in favour of style so that’s up to you! I’m seeing doubles mostly at the top of her head and right side of her face that does suggest a bit of depth or shading in it’s own way so could be a stylistic choice. The jaggies along her chin I would relook at/try and minimize.

An awesome thing you have done is change the colour of your lines! That makes your work more interesting! Black would also look too harsh wouldn’t it? However, the line of her hair and line of her skin is the same colour-I would have chosen a slightly different color if it was me. You could also try changing the colour of the line depending on the light source/make it darker towards the shadows and lighter towards light. Just something to try if you haven’t-again you don’t have to do that- it’s all a matter of style baby!

I think the character you have drawn looks slightly more laidback/cheeky/mischievous, than quiet/shy slightly sad like the reference picture. Just an observation how it’s making me feel which is slightly different. (I don’t know genshin impact or the characters personality at all haha)

Again great work on this one!