You completed one of his heavyweight masterworks and can approach his others with confidence. Try another of the major works: Light In August (more straightforward narrative but long), As I Lay Dying (more experimental, short), Absalom Absalom (bit easier than TSatF and a companion piece - my fave). Of his lesser works, my favorite is The Bear. They're all good though.

thirding woolf, as I lay dying is also a good step

You should try Pylon. It's one of Faulkner's few 'standalone' books outside the Yoknapatawpha county setting. Very underappreciated and very good.

absalom, absalom and then as i lay dying. echo the woolf suggestion, but also melville and morrison.

virginia woolf is a classic next step tbh