Doha: The Qatar Football Association (QFA) stated last evening that 85 percent of tickets for tomorrow's Amir Cup final between Al Sadd and Qatar SC at the Education City Stadium have been sold.   Ali Hammoud Al Nuaimi, Head of the QFA's Competitions Department, presided over a technical committee meeting to examine the title match preparations.   The teams' uniforms for the match were also revealed. Meanwhile, Al Sadd and Qatar SC, will complete their preparations this evening at the Education City Stadium. Al Sadd, looking for a record-extending 19th title, defeated Al Duhail in the semi-finals, while Qatar SC overcame Al Gharafa to reach their first final in two decades.