C172 LNDG AT LUK FOLLOWS WRONG ACFT; OVER FLIES WRONG RWY AND IS ISSUED GAR.

Narrative

WHILE TURNING XWIND IN THE TFC PATTERN (FOR THE L RWY OF 2 PARALLEL RWYS); TWR ADVISED THAT AN ACFT WAS ON A 3 MI BASE AND THAT I WAS #2 FOR LNDG. I CONTINUED WITH THE PATTERN AND SAW WHAT I BELIEVED WAS THE #1 ACFT XING THE THRESHOLD FOR LNDG. I TURNED MY L BASE AND CALLED TWR. TWR IMMEDIATELY ADVISED ME THAT I HAD CUT IN FRONT OF THE #1 ACFT. I CONTINUED ON THE BASE; NOT SURE EXACTLY WHAT TO DO; BUT I CALLED THE TWR TO ASK IF I SHOULD CONTINUE STRAIGHT ON THE BASE OR CONTINUE THE APCH. TWR TOLD ME TO CONTINUE THE APCH; BUT FOR A LOW APCH ONLY; NO LNDG. I TURNED FINAL AND BEGAN THE LOW APCH. WHEN OVER THE FIELD; TWR CALLED AGAIN ASKING IF I WAS OVER THE RIGHT RWY. I LOOKED TO MY L AND SAW THAT I HAD TURNED FINAL FOR MY LOW APCH OVER THE WRONG RWY. THIS INCIDENT OCCURRED BECAUSE I ACKNOWLEDGED THAT I WAS #2 FOR LNDG; BUT DID NOT FOLLOW UP ON IT WITH ENOUGH CARE. IN RETROSPECT; I REALIZE THAT AN ACFT ON A 3 MI BASE COULD HARDLY HAVE BEEN XING THE THRESHOLD BY THE TIME I WAS READY TO TURN MY BASE. I SHOULD HAVE THOUGHT THIS THROUGH AND THEN ASKED TWR FOR THE POS OF THE #1 ACFT BEFORE TURNING MY BASE. I ALSO COULD HAVE ASKED TWR TO CALL MY BASE FOR ME. THEN BY THE TIME I FIGURED OUT WHAT I SHOULD DO NEXT AFTER TURNING MY BASE AND ASKED TWR WHAT I SHOULD DO; I HAD FLOWN AN ABNORMALLY LONG BASE WHICH PUT ME IN POS FOR A FINAL ON THE RIGHT RWY. BEFORE TURNING FINAL; I SHOULD HAVE BEEN MORE ATTENTIVE TO MY POS AND NOT LET THE PREVIOUS MISTAKE CAUSE ADDITIONAL MISTAKES.