Sills, who is 6-foot-3, 175 pounds, is still only entering his junior season, but he feels as if he is ready to make a big leap in his development.
"I would say my athleticism is really the biggest part of my game where I've expanded," Sills said. "I'm one of the fastest on my team now. My stamina is not where I want to be right now, but it's better than it was last year. My flexibility is better, finishing out the game and my athleticism are what I improved upon."
Despite the distance between Elkton (Md.) Eastern Christian Academy and USC, Sills has been a regular visitor. His latest trip came last month when he camped with the Trojans, and he was able to work with quarterbacks coach Clay Helton.
"He's really good with the quarterbacks and connects with the quarterbacks well," Sills said. "He's straight forward with you and he tells you where you're at. He's a great coach.
"He said to keep working hard and keep updating him, and in the fall he'll be able to start contacting me and we'll talk a lot more."
Sills said he is "committed 100 percent" to the Trojans, and his latest trip was another reason why.
"It was wonderful out there," he said. "They treat everybody the same. They treat everybody as if they want to get better, and everyone is equal, and they're not afraid to play kids early. They'll play freshmen. They don't care what your age is, how experienced you are. If you work hard and show out during practices, then they'll play with you."
Next up for Sills is the Aug. 1 start of training camp, followed by an Aug. 9 scrimmage against powerhouse Our Lady of Good Counsel (Olney, Md.) and a week later against New Jersey power Don Bosco Prep of Ramsey, N.J.
And the competition is something Sills is looking forward to since ECA's 2012 season ended after three games because the state of Maryland did not sanction the program, which caused teams to cancel games. ECA coach Dwayne Thomas said Maryland's high school governing body already sanctioned ECA for the 2013 season, so there should be no such issues.
"It's kind of just shot up on me, but it's not like we haven't been preparing for it all the time," Sills said while at a recent 7-on-7. "This is just preparation for the season, and just getting chemistry with the receivers and the defense. The season has come up fast, but we're ready for it."