Beautiful shot !!.....lovely subject, & nicely arranged !
My thoughts ??......move the b/g farther back, to send it out of focus a bit, & help to reduce the shadows !
Secondly................arrange your main light above, & slightly behind the subject (almost backlighting), & position a
white card near the camera position to throw some light into the shadows.
All the shadows should now be towards the camera, with some rim-light on the flowers to lift
them from the b/g, & add a bit of 'zing' to the shot.
Not a criticism, just a few ideas for you to try out.....?.