What you did is fine. The only thing I would recommend changing is the termination point. It looks like you have it wrapped around a screw. The termination point on an external antenna should always be a rubber band. This will keep it tight, but allow gome give. If the antenna gets bumped or caught on something (Or, God forbid, you crash) the antenna could get ripped out of the Rx if the other end is tied down too tightly.

I always install my antenna internally. I used to build a tube into the Fuse, but now I have a better way. When I get a new Rx, I add a tube to the antenna. So instead of the tube being mounted to the plane, it's mounted to the antenna.

Now whenever I have to move an Rx from one plane to another, I just pull it out and slide the tube into the fuselage of the next plane.