I have reached a conclusion that the result of "not right" feeling about this work is come from a disproportion of the eyes, the bosoms, and the body. My solution? Well, not much of solution was reached actually, I was continuing my work as usual and fixing on what they can be salvageable. The disproportion probems are hard to be fixed since they all are relatable. I never used ruler in my work and need to measure everything by my eyes, which has been damaged since, well, 3 - 4 years ago maybe?
I still can see clearly, but isn't as sharp as my young self no more. But my own disadvantage may help me in some ways, probably.