I used 5 Finecolour markers and Bristol paper from smlt. Also I use 0.2 mm liner and white gel pen.
Here you can see all the steps.
Outlines the leaves of tangerine, obscure the shadow parts of the leaf
Outlined tangerine, in the lower part and dark places on the peel pass the second layer (after drying the first)
In the lower part of the mandarin and in the shadow zone I add a denser tone
I dash the background with a blue marker, add it to the light parts of the leaves. Under tangerine pass the second layer
In the shady parts of the leaves and in the boards under the tangerine add cold gray
Detailing the sketch with a liner and a white gel pen
I drew a sketch for 20 minutes 馃挭. I love it 馃槀馃槀馃槀.
P.S. It is hard to write in English, because my native language is Russian. But I'm learning. If you notice serious errors in the text that interfere with the correct perception, please let me know about them.