Journal of Petrina Case – Paper Engineer and Illustrator of -Pop-Up Books – Made to Order- Business Card Sculptures and Greeting Cards.

Archive for April, 2017

Start to finish: Sparrow in Prismacolor pencils

beautiful color pencil Artwork


This spring, so far, house sparrows have constructed nests in my cottage mailbox and in a quart Mason jar in our garage. When it comes to selecting a site to raise their young, they seem to favor recycling. I drew this little male in Prismacolor pencil, starting with a basic sketch in dark umber and then adding layers of color on top. Here he is in three stages:

Basic sketch, first in 2B drawing pencil then in dark umber Prismacolor. The dark umber creates a nicely shaded “underdrawing” with shadows and other details already in place, ready for layers of color to be added on top.

Now I begin to add thin layers of color — yellow ochre, terra cotta, dark brown — to build rich tones for feather patterns and also for the surface of the clay flowerpot perch. Though it sounds a bit odd, the warm gray on the sparrow’s belly…

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Cargo Plane C-130 Business Card Sculpture 1499

Cement Mixer Truck Business Card Sculpture 8916

Cement truck Business Card Sculpture


Harley Davidson Motorcycle

with cube card base.

One client did not want the base

Construction Tower Crane 8910

with chain and hook

8910 11439 Construction Tower_crane


Neurosurgeon Paper Sculpture 1063

1063 ad newursurgeon.jpg

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