Coat of arms of Donald

The blazon

or, an eagle, displayed, betw. two cross crosslets, fitchee, in chief, and a crescent in base, sa. charged on the breast with a mullet ar. all within a bordure az. — Crest, a garb ppr.

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.