What can I do with my temporary veneers to make them look more natural and attractive?

Those temps are actually not so bad. However the contour and the proclination is not quite right. In other words they stick out too much.So I would definitely keep talking to the doctor about recontouring them.

I would continue working with your dentist to get them the shape you are happy with before the permanent ones are made . This way the lab would have a blueprint to work from that is what you want. They look pretty good but seem to angle out some. Good luck