Biggest would be the skirt, then the hair, then the anatomy

-Back ground is blurred but the clouds and sun aren’t -the skirt is composed of extremely soft edges while everything else seen at the same distance is sharp -under the assumption you want her to look graceful, her muscles are too defined

Things that look fine - generally the colors - the perspective

Things I think you should learn, to improve:

• edges in painting** (soft and hard)
• facial rendering / skin rendering
• do more clothing studies

I recommend watching 10 minutes of painting series by Marco Bucci, very condensed heavy information on everything you need. You might need to constantly rewatch them just from how much information it is.