more scraping.
work slowly and carefully. if you scrape too hard at this stage, you could tear the skin. keep in mind that the skin is naturally thinner along the belly skin and legs but will be thicker along the back. vary how hard you press based upon where you are but be careful not to press too lightly or this step will take hours to complete.
working in sections that are about six by six inches in size is recommended. work that section until the skin gets fluffy -like suede leather. focus on the middle section of the hide, leaving a buffer of a good three inches around the holes. go 