If you're skills are reverent to your employer, you shouldn't need to bring it to their attention. Unless they are a bad employer, they should no what their employees bring.
There are good employers out there?
I've worked for one guy in 20 years that knew what I was doing all the time, who paid attention to my skill level, effort and what I was bringing to the company, and unfortunately, that lasted 3 months before redundancy.
I think most people that complain about not being paid enough compared to others are when the others doing the same job. I rarely see people complain about earning less than someone above them.
I am not earning enough in my role by 30-50% the industry standard.
I know this by what I do day to day and what job's are being advertised. I'm also being paid £500 less a year than the guy who had the job before me, who didn't and couldn't do half of what I did and was sat down each monday and friday and was given a list of jobs and monitored what he had done. It's annoying, but I've been doing it for 7-8 months now, i've not had a review yet and I get left to it.
I am looking and applying for new jobs, I'm pushing my own little things and I am learning everything I can. I won't get a pay rise here, they don't value my position or kind of work, they value sales and appointment makers.
When (IF) I get a review, I'll be asking for more money, talking about what I do, what I've learnt, what I've suggested, I will be talking about the level of work I do and what it's paid out in the real world. Worst they can say is no, i'll have a little more experience and i'll keep looking for work.