I like it Valerio !!!! Crop wise is fine Just do it to taste Would clean up the sides Example remove the flowers just coming into the frame
There is a delicate balance with blurring You need an anchor point There is an oof flower right in the middle that takes away from the image This could work even better at a much slower shutter speed Not sure what you used but would not hesitate use 1/2 second or slower
Size wise it is fine btw might want to experiment with bold colors !!!