Spaces: standing instructions plus your own files
how-toOld decks on your laptop are the best context you own.
Spaces > my private spaces > + > title, emoji, description, custom instructions ("optional" but "the most important one") > Continue > add context > upload local files. His Space "creatorpreneurship 101" set a casual, friendly tone for first-job marketers with no curse words; the 14 MB brand bible covered audience, values, design rules and "desi cool" lingo. He calls this like fine-tuning - in fact the file is searched as a source, not used to train the model. Spaces were in the free plan at recording.
On-brand output without re-briefing.

