hi!! i would definitely say to use more harsher lines. something thats really a big part of arcane's art style is soft shading inside sharp lines. i outlined some key places you can improve .
blue -> needs to be darker / more contrast. behind the cheekbones
yellow -> needs to be more highlighted / lighter
green -> sharper edges, in your art its hard to see where the lines end
the face also seems to be asymmetrical, you can try taking a photo with your phone and then mirroring it. usually, mirroring a face makes it easy to see the flaws as your brain is so used to seeing it one way.
hope this helped !! i use a picture of vi as a reference :)