Thankyou for your time...sincerely the problem to change with PS the background, is that this is a World Championship, and sport photography...this situation gives a limit in the postproduction. imho...
Generally theese shots are made by photographers standing in parterre ...if you observe my lines of composition, if i give space under her i must enlarge the shot and so she is smaller. I am working from an higher position and this is difficult if no impossible if i give all enlargment possible in my frame. But i know, is a right and appropriate observation...more breathing give the right global vision of a jumper...but in in this session , working from higher and very far positions , sincerely i am not able to do this..Have a nice day.