First you must have some nice high frequencies on the tracking level to get a good mix and master. if they are not clear and are cloudy from conversion, nothing will give you sweet highs.
As for boosting or cuting frequencies, it's often better to leave the last moves for the mastering engineer which has the listening environement, experience and gear to pull it off without degrading the audio.
Here's a 5 min master done with Ozone by amateur not a mastering engineer
It's just a test and it should have been done from a wave file, not an mp3 :

[MEDIA=audio]https://recording.o…

Todzilla, post: 453960, member: 11932 wrote: www.toddejones.com/songs/Flabbergasted.mp3

I'm fairly happy with it, but the high end doesn't have that special sauce I hear on other recordings. I don't just want to boost the whole thing at >2K. I welcome your feedback...

I really liked this song: It reminded me very much of a Canadian band named Sloan and a couple of their songs that you might want to use as a mix reference for that sparkle!:

Money city Maniacs
[MEDIA=vimeo]24406724

She Says what She Means

If it Feels Good Do It

I think you'll find that there are some similarities that suggest a certain sonic treatment in the mix