ACROSS
 1. HARD-ON N inside CAY = CHARDONNAY <wine>
 6. ←PALS← = SLAP <make-up>
10. <assign> ENTRUST = ENT + RUST
11. <bird> ROOSTER = ROSTER outside O
12. <comedic> DROLL = D_ ROLL
13. <&cd> ART SCHOOL {where to find those who draw studying}
14. A PS inside KNACK = KNAPSACK <bag>
15. <mind> PSYCHE = SPY* C + HE
18. CON outside OTT = COTTON <fabric>
19. <impassioned> VEHEMENT = VET outside HE-MEN
21. SOL outside MEP + ACE = SOMEPLACE <unspecified location>
23. <pleasant> SWEET = "SUITE"
25. CRONY inside A_ M_ = ACRONYM <gif?>
26. OP + U LENT = OPULENT <fancy>
27. <story> TALE = "TAIL"
28. TUE _T inside STATE'S STATUETTES <minor figures>

DOWN
 1. CREE D = CREED <belief system>
 2. <space traveller> ASTRONAUT = AS TRON + AUT[-o]
 3. DOUBLES TOPPING = DOUBLE-STOPPING <technique for playing chords>
 4. <songbird> NUTHATCH = N_ U_ THATCH
 5. <provide oxygen to> AERATE = A+E + RATE
 7. BLOTTO - B = LOTTO <game of chance>
 8. <most stout> PORTLIEST = PORT LIES + _T
 9. "WUSS TO SOURCE" = WORCESTER SAUCE <vinegary condiment>
14. <crowdfund> KICKSTART = KICKS + _T ART
16. C LEVERET outside S_ = CLEVEREST <most intelligent>
17. (PETREL TO)* = TELEPORT <immediately go elsewhere>
20. <rodent> MARMOT = ←TOM + RAM←
22. ←RUM← + A L = MURAL <wall painting>
24. <definitely> TOTES <bears>