Hi Ralham, I think it's a nice attempt. Here's my critique of the pose I believe you're attempting.
The slant of the head (left side, face "plane") in the reference is almost perfectly vertical. Yours is diagonal. It's usually not important, but to me it alters the feel of the pose. In the photo, it "feels" like she's purposely looking back. Here, the emphasis is less.
The body seems to be a bit more stretched vertically than the reference.