GO TO EBAY AND ORDER ONE. I replaced a 20 ft awning with myself (66 Y/o at time) and my disabled wife Took about an hour. Only gotcha is undoing tension on the spring and redoing the tension on the spring.
Call a mobile repairman and ask how much to put on a awning fabric you have already purchased. Make an appointment and he will show up and do it while you watch or help.
Should take him under 2 hours to do plus his travel time
Traveling with my best friend, my wife in a 1990 Southwind