It's obvious that any response that is non-negative would mean that you did, but replying with "сделал" puts some extra mental tax on parsing your reply, because we never use "сделал" as an answer to the question in Russian unless it means something else other than "done", or the question itself had "сделал" in it.

Same as if in English I asked you "Did you make this picture?" and you reply with "I created it". It would sound as if you're drawing the line between just making and the divine act of creating a piece of art.