Some early pre-production conceptual sketches of the Beast showed that at one point it was to have a shelled head and at another point was to have a beak.

Spotlight Challenge: Take one of Patrick Tatopoulos' conceptual sketches and use it to create an original alien makeup.

This show examines these and other more celebrated structures from his conceptual sketches through completion.

It examines some of his more celebrated structures, from conceptual sketches through completion.

Jonson, B (2005) Design Ideation: the conceptual sketch in the digital age.

This show, based on the society's extensive archives, examines these and other more celebrated structures from his conceptual sketches through completion.

I did a bunch of wildly different conceptual sketches.

A 1918 paper by Einstein presents a conceptual sketch of the idea.

The choices were based on conceptual sketches rather than on architectural designs.

Beaux-Arts training emphasized the production of quick conceptual sketches, highly-finished perspective presentation drawings, close attention to the program, and knowledgeable detailing.