>>1944455First time's always tough. Alright so as you can see with your background, there are color gaps everywhere. These are locations where the edges of different sections fail to meet, causing the background to peek through. I've highlighted some of these in red. Whenever you get close to finishing, check for these gaps using an odd color background and patch them up. It seems you're making the classic mistake of considering each section separate and cutting off their edges when it meets a different color. However, these lines are near impossible to judge and you will often miss your mark. I will refer to the next post on how to fix this.
Other points involve the common tip: less nodes more curves. Replicating the exact lineart makes these look bad, so try to use as many curves as possible instead of creating a new node for every slight bend in the figure. This is noticeable in the hair, which looks very jagged.
Speaking of jagged, are you using a vector program for this? You've got rezzing all over the place, doesn't look smooth at all. You've also managed to skip over alot of the details necessary for detail, like colors in the clothes, or the hairpin. You've also managed to completely fuck up the color scheme of the original picture. Use the color picker and stick to the most prevalent color in that section.