I love doing stuff like this. Looks good! The right tools and patience/planning is 80% of it (and can sometimes overcome any lack of experience or uncertainty, I've learned over the years).
Some people go into these things in a hurry, don't measure/mark, don't use a level, don't anchor in to studs, half-ass the installation, etc...and then wonder why it looks like hell. Stuff like this is
never a 30-minute, glitch/snag-free HGTV project (and if it is, you've probably done something wrong and it'll likely come back to bite you at some point).
But you did a nice clean, straight and professional-looking job. Makes all the difference!