Hey Morten, it looks great, here is some feedback:
The scratches are too uniformly placed all over, and their angle also seems very repetitive. Id say tone the amount ofscratches down a lot and also think about which places of the lamp would make sense to be scratched.Especially the scratches on the glass are a bit overdone im my opinion.
Another thing is the metal under the scratches is bright silver…Its like someone took this old damaged lamp and scratched it with a knife and then took a photo of it. If the scratches were old, they would be the places from which the rust would start spreading, and dirt would collect in them.
Lastly I think it would look great if there was a height difference between the paint and the rust. It looks like it might be there a bit now, but it doesnt seem like two separate layers.