Former captain Nasser Hussain was impressed with how England's women's side fought back to draw the recent Ashes series against Australia, but he knows they must continue to evolve if they want to close the gap even further on the reigning ICC Women's Cricket World Cup champions. England showed their class by winning both the ODI and T20I components of the multi-format Ashes on home soil last month and defeat in the one-off Test in June meant the topsy-turvy series ended tied at eight points apiece as Australia retained the trophy for a fifth straight series.