I like the way you have kinked up the rear sub frame loop on the old mudgaurd. But you will have to reposition it to support the new one, otherwise it will wobble about. The mudguard is positioned correctly as it follows the wheel in a concentric manner if you get my drift.
However - you might find it too long when you hang a light and a mudguard off it. The ali will fatigue unless some extra support is found - look at a BSA Gold star rear mudguard - there are some braces either side to stop it breaking off!
If I add a picture of an earlier incarnation of my bike where I had a long mudguard fixed to the subframe loop you will understand.
I have since shortend it, but I might re-instate the subframe loop, or at least part of it, to stiffen it all up at the back and kick it up like you have.
These aluminium blade mudguard are not very strong. Add a light and a number plate and it will soon be gone.
Rev. Light