THE NAILS SHOULD NOT BE DEEP
_nail the first 2 strips (one perpendicular to the other) to the piece of wood(photo1);
_nail a third strip on top of the first strip, and then one under , nail them(photo2,3);do it until it will be wide enough for your need;
_nail a perpendicular strip, woven to the strip you put before,and nail it (photo4);
_keep going until desired area.