I'm really just awful at figuring out what chords are used in songs, I can only tell when they're wrong. =/
A little help would be much, much appreciated!!! Thank you!!
What I do when I'm trying to transcribe chords is try to identigy the defining note of the chord and sing it into my guitar tuner. Then, I look up the chord it spits out.

Doing this, the base chords for Smiling Underneath are C#, G#, and F#. She also does not play this song on the guitar (or maybe it's just a 4-string? Not seen too many of those, personally) so it transcribes poorly to a 6-string. It's a hard song to cover.

Hope this helps!