Collect examples of the existing style
Choose several approved posts and identify what connects them: contrast, product presentation, colour or headline placement. Separate repeatable treatments from incidental decoration. A mini guide should explain specific decisions rather than become a complex document nobody uses.
Give colours defined roles
Choose a main background, text colour and accent. Record exact values and show allowed combinations. An accent can highlight a detail, but it should not compete with every line of text. Check contrast and readability on a phone. Colour should support hierarchy rather than replace a clear message.
Agree on type and headings
Record the typeface, weights and treatments for headings, body copy and notes. Check every required language so letters and apostrophes display correctly. Do not shrink an important condition into an unreadable note just to tidy the design. If copy does not fit, edit it or split it first.
Build templates for different jobs
Create separate starting points for product demonstrations, ordering terms, reviews and educational carousels. Mark what changes and what stays fixed in each. Do not force any text into the same layout. Photography and information should shape the composition within the agreed style.
Keep the guide where the team works
Store the current logo, fonts with appropriate usage rights, colours, templates and examples together. Label current versions and assign someone to update them. Review new designs for factual accuracy, readability, consistent colours and suitable photography. Revisit the guide when the offer or content format changes.