From a design perspective...
Pant's waist should be more curved, angled to match the front of the body but also curved to match hips and rotated to fit with the posture.
Shirt should probably also hang over the pants unless tucked in, which if is the case should probably have a crease or two to show.
Her left index finger is a talon and the hands in general could use some work. The shoes lack definition and look mostly like splotches of colour.
Also the height and proportions looks slightly off, but that may just be me.
Remember, 7 heads.
From a spriting perspective, the jeans look like a palette crushed photo, which wouldn't be so bad if it didn't have big splotches of a single shade and yet massive texture in the creased bottoms and around the crotch.
The shirt and hair overall could use more anti-aliasing.
The fringe needs less outline colour and needs skin-aliasing.
The cleavage isn't centered properly and gives the impression of wonky tits.
The lightsource in general is hard to truly pin-point, the general consensus of Fire Emblem is that the character is looking away from the lightsource. So for example, the light source essentially exists in the top right and top left of the GBA screen in conversations, with mugs on left adhering to top left and right to top right. This is more a general gist of getting a central and single lightsource and isn't "law" and is probably even broken by the games themselves, definitely when mugs are flipped in convos and moved to other sides of the screen, creating inconsistencies. But it's sprites, what can ya' do.