The master of Persian illumination in Tehran

Iranian artist Mohammad Hossein Aghamiri sometimes labours for six months on a single design, very carefullyhe knows a single crooked line could ruin his entire artwork.

In the age of AI-assisted graphic design on computer screens, the centuries-old tradition of Persian illumination offers an antidote to rushing the creative process.

Aghamiri's fine brush moves natural pigments onto the paper with deliberate precision as he creates intricate floral patterns, religious motifs and elegantly flowing calligraphy.

The exquisite artwork has for centuries embellished literary manuscripts, religious texts and royal edicts, as well as many business contracts and marriage certificates.

Aghamiri, 51, is one of Iran's dozen or so remaining masters of the ancient illumination art of Tazhib, which was inscribed last year on Unesco's list of intangible heritage.