Nice autographs from the Celebration 4 convention.
From the top I would estimate:
Shannon Baksa McRandle (Mara Jade) - 20 to 25 pounds
Amy Allen (Aayla Secura) - 20 pounds
Mara (as above)
Natalie Krisran (Barris Offee) - 20 to 25 pounds
Rena Owen (Tawn We) - 20 pounds
Ray Park (Darth Maul). - 30 pounds
Dave Prowse (Darth Vader) - 20 pounds
Femi Taylor (Oola) - 20 pounds
I could be wrong but Celebration logo photos are limited and unsigned ones were destroyed after the event. Hope this helps.