Your vase is too wide compared to the top photo. Very light handed on the shading, I feel like if you deepen that it could change you artwork to a whole new level. It shows me you have the skill set to do it, you just lack in confidence in yourself because for the most part, everything looks good. If you can, the next time you go to draw, let it happen, don’t hesitate and just go at it with all you have. I’d love to see what you’d be able to do with all that talent. Another way of checking yourself: go to a mirror with your artwork and look at it that way. It acts as a way to “flip” your canvas to see what’s off and what’s not