What to do to improve speaking score

Hi all

I appeared in the toefl twice first time score was 93 R21L24S23W25,its not bad but I needed 26 in speaking as it is the requirement for the pharmacist. Second time I got 101 R26L25S23W27 , which is again good if you leave the speaking score. I am just worried for my speaking score. What should be done to improve it as I do recordings, submit to testbig and give many mock test in which my score is between 24 to 27. Does any one thinks rescoring can be helpful in this case. Please advice?