I do well in exams due to my academic dexterity
I think you should cancel this line.or the semi colon at least being a better student doesn't need further explanation.
Rowing has made me value teamwork
*team member*
Rowing has made me value teamwork, as in order for us to be successful we have to commit ourselves as one to training
Revise this sentence.
As Captain of the rowing team, I suit my leadership role
I feel this sounds a little iono "I suit my leadership role" I think you should put it in another way