The Larvesta egg have a specific encounter type. I haven't done this myself, but I assume that you should have Method 5 (Standard Seed) selected, then choose "Larvesta egg" on encounter type. But to get it shiny, I'm a bit unsure. The box "search for nearby shiny frames" should be clicked. But then the max frame should be about 200 I think... At least it is that way when RNGing for daycare shinies. I'm not sure, but I think it works out pretty much the same way. Put in your desired IVs. Again, this guide is very helpful: http://www.smogon.com/forums/showthread.php?t=3446600 Once you found a nice IV spread, you know how to do the copy full seed thing? Correctly! However, your PID frame could be a bit tricky sometimes. But if you KNOW your is on frame 48, then chatter four times and hopefully it should work out well (which it doesn't at all for me...) I wish you good luck!