Whenever you use the word “I” it should always be capitalized. Instead of using a period you’ll want to say “leadership might be an innate skill, but it can also” “When I was new to my job I was very shy and kind of an introvert” As time progressed I started to learn how to lead a time in the corporate setting and my manager now has the confidence that I’ll do a great job. She appreciates me for all of the leadership qualities I’ve developed. Which proves that leadership and many skills can be developed through experiences.