C182 PLT ACKNOWLEDGES HUF GND CTL TAXI CLRNC BUT FAILS TO REALIZE HIS NON COMPLIANCE UNTIL ALERTED BY CTLR.

Narrative

I RECEIVED INSTRUCTIONS FROM GND TO BACK TAXI ON RWY 18 AND CALL THE TWR WHEN READY. ACFT WERE DEPARTING ON RWYS 18/14 AND 23. MOST TFC WAS USING RWY 23. THIS IS A NEW HOME BASE ARPT FOR ME. THE TXWY FROM OUR HANGAR LEADS TO RWY 18/36. ON THE FEW PREVIOUS FLTS I HAVE MADE; I FOLLOWED THE NORM FOR PLTS PULLING OUT OF THE HANGARS AT OUR POS ON THE ARPT AND REQUESTED A RWY 18/23 INTXN TKOF. HOWEVER; I DID NOT MAKE THE REQUEST. WHEN I INFORMED THE TWR I WAS READY AT RWY 18/23 INTXN FOR DEP; HE INFORMED ME THAT HE TOLD ME TO BACK TAXI ON RWY 18 AND WANTED ME TO DO SO ASAP; SINCE HE HAD AN ACFT THAT HAD LANDED ON RWY 23 WANTING TO TAXI TO THE RAMP USING RWY 36. I IMMEDIATELY DID A 180 DEG TURN AND BACK TAXIED ON RWY 18 TO CORRECTLY POSITIONED MYSELF AT RWY 18 THRESHOLD FOR TKOF. EVIDENTLY; WHEN GND TOLD ME TO 'BACK TAXI ON RWY 18;' I HEARD 'TAXI ON RWY 18' BECAUSE I WAS PRIMED TO HEAR GND CTL TELL ME TO TAXI ON RWY 18 FOR A RWY 18/23. WE INTXN TKOF. THOUGH I REPEATED GND CTL'S INSTRUCTIONS CORRECTLY; I OBVIOUSLY DIDN'T LISTEN TO MYSELF.