Roughly sketch idea...
(Got general idea by looking through pics of people holding a magnifying glass...)
step 2 of 10
Add spot colour using a pencil brush(this has texture)
Then I begin to smudge altering from pencil brush to soft brush...
step 3 of 10
I begin to smudge, and add colour as I go to fill in gaps.
Smudge and add...smudge and add...
step 4 of 10
More smudging.. add more and more details as I go...
step 5 of 10
Everything smudged, now start to add colour with brush and smudge some more...with this technique, I add more details along the way, by adding bits and bits of colour.
step 6 of 10
Start to refine edges and add more detail...
step 7 of 10
more details...
step 8 of 10
Add eye details...
step 9 of 10
Eye detail..tried to get it as accurate as possible ;)
step 10 of 10
Smudging with 60% and 70% strength....with soft brush.
This is the effect you get.
It gives you freedom to find natural shades of colour and blend easier until you are satisfied with your result.