I made it and it really is delicious.
I laid four sheets out so that the entire thing measured 2ft by 2 ft, kind of overlapping them to make the size right (I wasn't sure what the instructions meant either). I put the filling on top in a sort of fat sausage shape at the edge nearest me then rolled it away from me slightly, turning the side edges over to enclose the filling. Then continued to gently roll it until all the filling was enclosed by the filo. I then lifted the whole thing onto a baking sheet, very gently as the filo is very delicate.
If I make it again..I'm sure I will as it was soooo tasty...I'd use two layers of filo i.e eight sheets, rather than one layer.
Hope that explains it a bit. I'm sure you'll love it :)