They look like they're wearing Michael Jackson-style face masks. Strange treatment on their mouths/lower faces. And who is the figure on the left? Looks like there's more to it than your average Family Group...
Yes, I like some of the stylisations (especially the flowing lines), but there are what I would call some clumsy stylisations too. The figure on the left - if not symbolic, then it's a grandad, I'd say.