An interesting development of sketching a very basic object.

A sketch of a motorcycle, showing the multitude of perspective lines.

This one is a little messier in terms of composition but I like the accents of color that define the individual sketches.

I really like the layout of this page. Besides the fine line work I think this is a good example of a balanced sketch to study (it has some notes too which I always love to see)

Here what I thought was nice is the combination of different views on the same page.

Effective use of varying line weight

Composition and the view angles are well thought out

By Steve Godden

Product render sketch from Pinterest

Erik Askin

Erik Askin

Mohammadreza Mousavi

This mouse has intricate structure and smooth curvature. It is a very clean sketch and exhibits effective shading.

This bottle sketch has beautiful curvature and intricate details. The finish on the bottle is sleek and smooth.

very useful orthographic view of this product.

Cintiq generated sketch, Nice use of black background and white line in a very gestural line style

Prismacolor pencil, very high end car sketch, notice the softer line hatching

Prismacolor and marker. notice the vertical hatched shadow does not distract from the sketch

Prismacolor pencil sketch of something you will get to try, lamps!

A strong progression of drawing leading from geometry to rendering.

Quite concise drawings. Simple concepts that have the clear base structures (ellipses) still visible on the page.

Unique views using perspective shapes. Simple, clean, and still professional.