Is there such a thing a too much restoration? Yes of course there is. Most examples of this can be spotted easily as they look way too false which I have seen many times by another restoration artist who lives not very far from myself. Although he gets a reasonable amount of work he has a habit of drawing stuff into the picture to assist repair but the eye cannot be deceived, you can tell somethings wrong. I like to repair as much as possible and if I can’t grab or clone something I will search the net for something similar, never sketching it in.
Why too much restoration in this photo then? Well I have a habit of perhaps cleaning up things to make a picture nicer, like maybe dog dirt on the floor or a person walking by. In this case I removed some ‘leaves’ on the floor which I thought made it a lot tidier. When the customer saw the result he asked very politely “Is it possible to put the flowers back into the photo?” He wanted them in the photo to show a relative and ask if it was a particular flower that he thought he recognised. Easy to put back and in future I will ask before I remove something haha.