Question about bringing the elbow around

[181174]

Had this happen in a game I was working on Saturday. Late in the 4th quarter the offensive player caught the ball out by the 3 point line, defender came out, bumped him kind of got under him, I called the foul, started to go over to report the foul, would be shooting 1 and 1, the offensive player turns his elbow toward the defensive player, he stops before making any contact and defensive player backs away so no confrontation or anything, I warn the offensive player to watch the elbow, I told him the play was over the foul was called, should I have done anything else? should I have had a technical foul here for the elbow without any contact? just wondering on how to handle this situation the next time, since it was a dead ball if there was contact I know I would have had a technical foul and then I would have had to decide if it was flagrant or not. Since there was no contact how does this get handled?