I used a Platinum Carbon Pen with yellow waterproof ink (De Atramentis) but if you haven’t got that – and I am going to assume you haven’t – then use a sharp pencil, 2B by preference. You don’t want too heavy a line.
I used a variety of yellows for the petals. The big thing is to keep darkening the brown centre – it needs to be very dark indeed.
To summarise, here are the materials I used:
- Yellow Document Ink by De Atramentis, waterproof
- Urban Grey Document Ink (De atramentis) and Emma Sketch Ink by Rohrer & Kilngner, both waterproof
- Watercolour: Payne’s grey, Burnt umber, Hansa yellow light / Aquarius yellow, Green apatite genuine, Ultramarine, Phthalo blue, Yellow ochre, Burnt sienna
- Jin Hao 55-degree fude pen
- Platinum Carbon pen
- Hahnemeuhle Watercolour Sketchbook
If you don’t have the pens or ink in question, use a sharp pencil (2B if possible). Keep it sharpened so keep a knife handy.