This! I have a TON of experience with DIY coloring too (including dark brown to blonde color corrections and vice versa) and the one the thing I would never even try to do myself is highlights. Because with most color processes, it's mainly about the chemistry, mixing, timing, etc. But with highlights, it's all about the technique, the placement of the highlights and a lot of things that would be very difficult to do on yourself, even with tons of coloring experience. As far as damage goes, my hair has never gotten very damaged from just highlighting. I'm sure others might beg to differ, but I think as long as you take proper care of your hair a few highlights (if done correctly) shouldn't wreak too much havoc.