#1 : I completely disagree about the need for a flash (would ruin the feel of the image IMO), but I think you got the street light wrong. There is too much light on your model's pants. Maybe three steps forward and the problem is solved. You chopped her hands, too. I actually don't think it's a problem in this image but someone always complains about chopping limbs in the wrong spot. So there: a complaint.
#2 : Delete it and move on. That 'flowers covering the face' only works on Instagram, with a bit of PP, and a lot lot lot of practice. Too much arm, as well. You've got this beautiful model with her lips parted just right, and seems like a photograph of her arm, exaggerated somewhat by the choice of focal length and close position to the lens. Further, her arm hides and eliminates her form, which I would guess is tastefully accented by her hair - neither of which we can see. However, if you remove those flowers, you've got some really fine colors and lighting in that image. Seems you might have some PP skills, so when you retake the image, knock out that blurb of red / orange on the top left. Doesn't necessarily hurt, but doesn't need to be there. Also - Did you smooth out her neck or remove a shadow? Could purely be the angle, but looks a tiny bit too perfect to me.
There's a thread on POTN for natural light portraits. Flash is overrated.
"Post your Natural Light Fashion/Portraits!!"
Way to put yourself out there. Hope the comments help. Later,