dear bro, the shot is great. and in my opinion, you can use disordered curvy lines. just right close to each corner. andand if the lines appear through a thick black border line ,that will be great... But as long as it's not visual,not easy to judge. I didn't not want to manipulate it personally,because I do strongly believe that each shot belong to the owner of the shot,and any changes is supposed to happen has to be done by the person by whom the shot has been taken.
In my opinion, the border depends on where the image is to be displayed - what may be good for UF may not be good elsewhere. For UF, I suggest keeping it simple - maximise your limited UF real estate with a single pixel black outline to hold the image in (especially if it has light tones at the edges), perhaps with a drop shadow to help offset it from the BG.
Anything else you do will eat into your image, so I suggest that in general you let your photos speak for themselves.
Having said that, I do believe there are occasions when a border ADDS to the image, eg. when the photographer is trying to create the impression of a poster. Not being much help really, am I?!
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