Hey that looks ok Andrew. I love the photo, looks like he's having some fun. [excited]
You should try to leave "some" definition in the border though, otherwise it's no more interesting to look at than a plain ol' vignette. Right?
Here... here's another one with a bit more to it.
A couple filters used on this one:
1- Select photo.
2- Click "New Channel" icon in channels palette.
3- Click on the channel, then Deselect.
4- Spatter filter with max settings.
5- gBlur 3 pixels.
6- Levels filter -- drag black and white sliders inward till border edges get clean/hard.
7- Apply Fragment filter. (Pixelate>Fragment)
8- Crystallize filter -- size=10-15.
9- Minimum filter 5 pixels.
10- Paint Daubs filter -- default settings.
11- Ctrl-click the channel to load it as a selection.
12- Add new layer below photo, and fill selection with black.
13- Select photo again.
14- Click on the photo layer, and add a layer mask to it.
15- Repeat steps 4 through 8, then jump to 10.
And that's it.
TIP: If you want the frame a little darker, just duplicvate the border layer once or twice.
Neat looking effect. :B