Now you have your skills list. That thing is gold to keep updated…especially if you have things you have done “over and above” your job. That’s the keyword. Over and above.
As your yearly review approaches, think back to what you’ve done that wasn’t part of your normal job. Things you helped your manager with. Things you made, coded, projects led, fixed, turned around, saved, money saved, time saved. Have that all ready to go and pull it out (in paper form, preferably).
Also, check out glassdoor.com and http://salary.com for jobs roughly your same. Take the high end, add 15%, and ask for that. That’s a standard ask in the industry (for the executives. Which you are one…in training.)
So go into that interview with a smile, go through the standard parts, and then bring out the paper. Read off the list with a “remember when I did X? Yeah, that saved you a lot! I also remember when I helped you with Y. That really made that project work. I hope we can work out something fair for the proof I’ve shown that I’m capable of far more, and I’m excited for next steps. I’ve done some research and found X amount might be a fair number to go to, but of course I’m open to negotiation.”
You’ll go from a $1 raise to a $10 (per hour) raise.