put (one's) stamp on (something)
To demonstrate one's unique style or interpretation in the production of something or by influencing or changing something. Though he only produced the film, it's clear that the auteur director put his stamp on it. The new CEO has made it clear she intends to put her own stamp on the company. The novel is the author's attempt to put his stamp on Shakespeare's Hamlet.
put your stamp on something
If you put your stamp on something, you do something that makes it clearly show your influence. Since my bloke left, I've been putting my stamp on each room. He is determined to put his stamp on the 150-year old newspaper.