Green’s Dictionary of Slang

(Aus.) neat, tidy, smart; thus schmicked up, dressed up.

1985		R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 83: In about a week Norton had the old semi looking pretty schmick.
1998		R.G. Barrett Mud Crab Boogie (2013) [ebook] Les came out of his bedroom all schmicked up in a pair of jeans, a maroon shirt and a black Wrangler jacket.