How to draw lemons
Reference by Aliona

Sketch the lemons and leaves
Lightly sketch oval lemons with crossing lines. Add lines from the cut lemon’s centre to its edge, then pointed leaves on thin stems.
Draw the outlines
Go over each lemon with a firmer line and add the small bumps at its ends. Sharpen the leaves and draw a centre vein in each. Keep the light lines.
Add the cut halves and roundness
Add the rind and segments to the cut lemon. Make the oval halfway down the right side a second cut half. Curve a line in each lemon for roundness.
Add skin dots and leaf veins
Dot the lemon skin, especially near the edges. Add branching lines inside the leaves and make the outlines of the cut segments clearer.
Clean up and draw the background
Erase the remaining crossing lines. Draw irregular shapes behind the lemons, like overlapping pieces of torn paper.
Colour the lemons first
Use yellow for the fruit, leaving white rings and dividing lines in the cut halves. Keep the leaves and background pencil.
Colour everything else evenly
No shading yet: dark green leaves and background patches in soft grey, lilac, pink and beige.
Add light and shadows
Paint light tops and darker orange undersides. Add shadows under the lemons, light streaks on the leaves and thick strokes in the background.