FG Piece Size

I've been doing some extensive reading on fg-ing and I've got a question about laying down the layers. I've read that it's better to tear the mat rather than cut it, but how small/big should the pieces be. It might be a stupid question but I'm not too sure. I'm trying to get all my questions answered before I dive into a project. I'm glassing a box in the corner of my trunk. I know to tape and foil the wall etc..., but how small should the pieces that I'm layering on the wall be? Is it better to lay it down in small squares, big squares, long strips? Sorry for the long post but I just wanted to my my question clear. Thx in advance

I agree with Bellsracer on use what you feel comfortable dealing with but also keep in mind the setting time of the resin and amount of resin being mixed at a time. You dont want to be getting ahead of yourself with more resin ready than mat because then you end up wasting resin while your cutting the mat. I suggest cutting the mat because i've found that by ripping it, the freyed ends don't always go where you want and they create air pockets, when cutting the mat you can lay it out to yor design with very little overlap where air can get in. By doing this you can actually have all your layers cut out and ready to go.