I wove the sparrow's breast up to the opening where the legs are inserted, weaving from the outside edge to the centre line. This wool is very springy and tends to spread out. So before I wove from the other side to close the gap I temporarily whip stitched the woven edge with a contrasting thread to hold it in place. This gave me a firm border to weave up to.
I inserted the finished legs into the pocket and wove between them.
I chose a suitable piece of driftwood for the base and drilled two small holes straight down to hold the leg wires. All that was needed was to adjust the toes a little bit to look natural.