"I still haven't fully got to grips with the intensity of Premier League football," the Russian star, voted Arsenal player of the month for March by the club's fans, told Sport Express.
"I don't feel free yet when making decisions. To gain this, I need to fully adapt to the rhythm of the game. Right now, I always feel under pressure. If in Russia I could get the ball and think two or three moves ahead, here I still haven't been able to do that," he said.
"Everything plays its part, even everyday things. There are no small details in football - everything is interconnected," the former Zenit St. Petersburg player went on. "When I am 100% fit, my brain will also work faster."
Arshavin is cup-tied for the second leg of Arsenal's Champions League quarterfinal against Villarreal on Wednesday and his next game for the Gunners will be against Chelsea on Saturday in an FA Cup semifinal clash.
Chelsea have been a team transformed since Guus Hiddink, the Dutch coach of the Russian national side, took temporary charge at Stamford Bridge in February, and Arshavin said that league leaders Manchester United were still not guaranteed the title.
"Manchester United should be wary. The English have already realized what a special trainer our Guus Hiddink is," Arshavin told the Russian sports daily.
Arshavin's impact on the Premier League, with two goals and a number of assists in seven undefeated games, contrasts with fellow Russian international Roman Pavlyuchenko, who arrived at Arsenal's North London rivals Tottenham last summer and has struggled to hold down a first-team place with just five goals in 24 league games.
But Arshavin had some words of encouragement for the former Spartak Moscow striker, who scored the only goal in Spurs' 1-0 win over West Ham at the weekend.
"Roman's goal was excellent," he said. "I haven't had a chance to congratulate him yet though."
