The kite is up!

Lightly she leaped, as a wight forlore, / From her dull horse, in desperate distresse, / And to her feet betooke her doubtfull sickernesse.

Your bitmap image appears along the painted stroke. If you'd like to permanently create a custom sprite brush, it's fairly easy to adapt an existing MEL file[…].

For cleanliness, experienced millers prefer an 'overdrift' mill (as, indeed windmills should be, for lightness and efficiency of driving gears), because underdrift gearing becomes very dirty and clogged with a compound of meal dust and grease, besides being generally inaccessible for repairs and adjustments.