ALLEN PARK — Think of Brandon Pettigrew from last season and chances are you remember his mistakes — drops and fumbles.

The Detroit Lions tight end worked hard in the offseason to shed a few pounds and add muscle by eating cleaner. He admitted he’s a burger guy but added grains to his diet.

He also worked on his game.

“Really just basic stuff, looking the ball in, stuff I had a problem with. Obviously I dropped the ball a little here and there,’’ Pettigrew said after practice on Tuesday.

“You’ve got to kind of put it behind you. Of course you know you had drops and you know the things you need to work on. That’s what you need to work on in the offseason,’’ he added.

Last season Pettigrew had 59 catches for 567 yards and three touchdowns. He also fumbled four times, losing two. He dropped eight passes, according to ESPN Stats & Information.

“You’re definitely going to have drops, you have to move on, put that behind you and make the next play,’’ Pettigrew said. “If you have consecutive drops in a row it’s going to get to you, but for me it’s going to make me want to go out and play even more. So you definitely have to put it behind you, you can’t let that linger on it will bring your whole game down.’’

Like Pettigrew, coach Jim Schwartz doesn’t want to think about last season.

“Brandon’s in excellent shape. He’s a big part of our offense. We’re really excited about what he can bring,’’ Schwartz said. “He has worked very hard to address some things in the off season. We’re really excited about it.’’

Pettigrew and Tony Scheffler, both in contract years have more competition in training camp this year.

(Follow @PaulaPasche on Twitter. Order her book,  “100 Things Lions Fans Should Know & Do Before They Die’’ here. It’s also available at bookstores.)