In your work I observe that you captured the character, the perspectives and the angles are fine, the detail is in the eyes and in the lenses, there is a variation of tones that make the right eye is overshadowed by the left, when we draw lenses we have to take into account the reflections in the crystals, this will give us the depth and the effect of adequate reflection, for everything else it's fine, continue in practice and the activities go very well.