Stop trying to sound like the beach boys
Tone down the background singing, or at least try to add some counterpoint because none of you have amazing voices.
Change the guitar tone. It was annoying and whiny.
Get some direction for your songs.
All in all, certainly not the worst I ever heard. I like it but it needs tweaking and direction. May I suggest a 12 string?
I put the STD in STUD, and all I need is U!