Proportions, limbs (arms, legs) are composed of two main parts, joined by a knee or elbow. In any case these parts should be equal in length to each other. Typically half of an arm's length equals a head, though that only applies to grown men/women. In teenagers and children it's somewhat shorter, and in lolis/chibis it's dramatically shorter than that. Anyway in your pic Shizuru's (I think that's her, I haven't played either galge) forearm is too long. Since it's necessary that she keep her hand on that patch, just have her raised at a higher angle, while shortening the forearm.
Azusa is fine, although the top of her head is too... High.
Keep drawing pls
I'll contribute there
