Rolf,
I think Jerry gave you some very good advice.... I wouldn't do the long wire under the cheek piece and over the wrist either, and I agree with David R. about the lower wire with the unnatural bend. Other than that, I don't think it looks all that bad. I'd play around with a scroll(s) under the cheek with everything eminenting from there. If it's an American piece, I'd recommend .008 wire and "blend" tendrils from the main stem. If it's a European piece, I'd use .005 wire and "stack" the pieces, having the main stem split, creating the tendrils.
Wire design is challenging, but I think you have a pretty good start. I'd also highly recommend drawing on paper, as Jerry suggested, and transfer the image onto the stock when your happy with the design.
Ed