"myusername has not listed his skills."

should be:

"myusername has not listed her skills."

or, more neutrally:

"myusername has not listed their skills."

Edit: I wrote this comment because I'm a woman and it can be a bit jarring to see myusername referred to as 'he'. I wasn't commenting on grammar; just trying to express my thought that if a website is going to refer to someone by gender, then it should be done neutrally unless the option to select a gender is provided.