/ic/ - Artwork/Critique

Study from one of LM7’s works (https://www.pixiv.net/en/users/420928))
Any tips on inking? The hair, clothes, and chair look like theyre made from the same material and blend into each other and im not sure how to fix that. Also, I tend to stick with 0.05 pens since everything else is harder for me to control, and its easier to control line width when i start from the smallest option. I plan to move onto brush and dip pens to learn better control.
Im thinking for this i should study ink works. Shouldnt use a digitally rendered piece...