opened on the Button with 7♦6♦

Hand Summary:
NL10 Zoom, BTN vs SB 3-bet pot. I opened on the Button with 7♦6♦ and called a 3-bet from the Small Blind (effective stacks around $10 for me and $3.3 for SB). The flop came T♦-4♥-A♦. SB checked, I made a close-to-half-pot c-bet, and SB called. The turn was T♥; SB checked again, and I fired another near half-pot barrel, which SB called. The river J♥ completed the runout. After SB checked for the third time, I shoved (covering SB’s remaining half-pot stack). SB called with A♣6♣, making two pair (Aces and Tens), and won the pot. I had no made hand and was bluffing all three streets.
i dont know how to improve this hand.