Pencil portrait of Nhu with a hidden smile

Graphite pencil portrait of Nhu with a hidden smile on A4, Daler Rowney Airbrush Bristol board.

Pencils: Mars Lumograph (HB and 4B), Faber Castell 9000 (6B and 8B), mechanical pencils 0.2mm/2B, 0.3mm/2B, 0.5mm/4B and 0.7mm/HB with Ain Stein leads.
Blending: Blending stumps from Royal Langnickel, cotton buds and paper tissues.
Erasing: WH Smith kneadable eraser, Tombow Mono Zero Ultra-fine eraser, Jakar battery electric eraser. 
Photo adjustment using GIMP: Removal of barrel distortion; Cropping to A4 ratio and removal of perspective distortion; Cropping unfinished edges of drawing; Adjustment of histogram.

My sincere thanks go to  Réhahn Photography for permission to use his photo of  Nhu  as reference for this drawing.  His photo is Copyright Réhahn Photography.

Nhu is 4 years old and is from the Cơ Tu ethnic group in Vietnam.

The main challenge in this drawing was the hands and their shading.

The drawing process for this portrait can be seen here:

Here are my other 'Vietnam' drawings      and from Cambodia and Laos