Shaun Barker admits he struggled to settle at Derby County but says he is starting to show some of his best form.The defender joined for £1m from Blackpool in July and endured an injury-hit start to his Rams career. [LNB]But he has played 18 games since returning to the side following a thigh injury at the turn of the year. [LNB]He told BBC Radio Derby: "It was tough at the start but I'm starting to settle down, enjoy it a bit more and I feel a little bit more commanding." [LNB]The former Rotherham centre-half has also weighed in with three goals in his last 12 games and has played a key role in helping Nigel Clough's side stay out of the Championship drop zone. [LNB]But he is still not totally satisfied with his efforts. [LNB]"I still feel I can do better," Barker added. [LNB]"Last year at Blackpool - which is where I got all my plaudits from and people started to take notice - I played better than I have this season. I feel like I am getting stronger but I can do a better job for Derby."[LNB] For me...Barker is just one of the best signings I've seen in a Derby shirt since Jim Smith brought Stimac, Baiano, Eranio BACKO66 And he admits joining a side of Derby's stature has not been easy. [LNB]"It took a little bit of time for me to settle," Barker said. "It's a big club to come to. [LNB]"I've played a good few games in this league and done a good job for the teams I've played for. [LNB]"But I felt a bit of pressure when I first signed; it was big money they paid for me and there are 30,000 fans and there is the expectation of doing a little bit better than I did for Blackpool and Rotherham." [LNB]But a series of impressive displays prompted Clough to say that Barker has the leadership qualities to step into captain Robbie Savage's shoes as and when required. [LNB]"It's massive honour," Barker said. "He's spoken to me and said he wants me to be bit more commanding. [LNB]"And to say I could be skipper next year is massive compliment and I'll be honoured if I am."