pictures of banknotes

Having accumulated quite a bunch of rather uncommon banknotes over the years, many of them still missing in the database, I will be happy to enter them into the database (one after the other...), even if it may take me a while.

One question: Occasionally for notes already existing in the database, I have an uncirculated one whereas the existing picture shows a (sometimes quite) used one.
Not sure whether I can do that technically anyway, but would it be considered as rude, if I just kicked the existing picture out and added a new one, showing a note in better condition? What could be a procedure for that?
Please let me know your thoughts... Maybe that was discussed before and I didn't find it. If so, someone could please give me a hint

If it's clearly better, upload yours I don't know why it would be rude.
I only refrain from replacing one if mine is only marginally better there will always someone with an UNC one later.

The option New picture is what you are looking for