Harmer and Vincent Simone earned a mixed response from the judges for their waltz, and she was criticised for not smiling during the dance. The Tracy Beaker star blamed her early faults and lack of a smile on backstage fears.
"I was so scared. That was the most terrified I've ever been in my life," Harmer told It Takes Two. "But I know I have to start smiling more and I know I will.
"I was definitely better in rehearsals. It all really did get to me. My knees were knocking."
The duo are dancing a salsa this weekend and Simone believes that the routine is better suited to Harmer, claiming that it will allow her to be a bit more "funky".
Copyright: BBCJoking about their problems with lack of height, the Italian pro added: "We have to work harder because everything is further away. We have to work on speed. That's going to be our thing."
Watch Dani and Vincent's week one dance below: