Poking around sai tell I figured out what the fringe effect was in all honesty that isn't going to be an easy effect to recreate in photoshop. It is do able but it won't be easy. I would just suggest do what you need in sai and then save as a psd and finish in photoshop.
I thought about doing that, but I hate switching from one program to another. It's just inconvenient and makes me feel somewhat unorganized. I thought about using SAI for the colouring and PS for the effects, but I'm just worried that the effects won't work as intended and I would have to go back to SAI to fix up the mistake or something. I don't know, I'm just rambling now. It makes me feel uneasy, is all.
But I guess I would have to do just that. Thanks for the reply
Well in all honesty it won't be unorganized if you can manage it right. Here is an example of how I do it. Save the file as a sai file and call it something like AwesomeArtSaiFinal.sai Then save as AwesomeArt.psd This way you will have the final sai work project so you can always save new psd's. So you can destroy your artwork and sleep easy at night. Some people even take an extra step and save each time with a new file. This way they will always have their older versions. If you chose to do that I would suggest using a numerical organizational system.
Example: 00_AwesomeArt.psd 01_AwesomeArt.psd
That everything will be nice and organized. The underscore isn't vitally important, just more of consistency thing.