Выберите тонкую нить для вашей сети, приблизительно в 2 раза тоньше той , которой вязались мотивы. 

Start with 5 (6) chain stitches (ch), connect, and work around making arcs and dc (double crochet stitch) trying to make a shape to fill out area between your motives, until it slightly smaller. Then you pin your net to the working space and connect it to all  motives around.