I took photos as I went to show the steps.
Step 1 shows the shading,with pale ultramarine and light red washes;
Step 2 shows the yellow petals washed in carefully over the shading.
Then step 3 shows the stems painted in with a glaucous green and also the papery spathe;trying to keep it looking transparent.
Then I thought I'd posts some facts about the daf;
It is the national flower of Wales and is called Cenhinen Bedr (Peters leek) in Welsh.
The genus name, Narcissus, means "to grow numb" in Greek and the plants, especially the bulbs are poisonous.
Florists who handle daffodils can sometimes get a skin condition called 'daffodil itch'. Umm!