Always "charge" your Q by using it just before its cooldown resets; practice ground-targeted Q to dodge enemy skills while weaving in auto-attacks.
For kill setups, engage with Flash-Q-auto, saving E and 3rd Q for enemy escapes; in teamfights, flank to manage aggro and find optimal entry points.
Riven is vulnerable up close; master her mobility and raw damage with builds like Ravenous Hydra, leading fights with precise execution.