Decide the painting in drawing, not in paint
Treated drawing as seven-eighths of painting and resolved a picture on paper first (nude studies, drapery studies, hand studies) before colour was allowed in. He made more than five hundred preparatory drawings for the Dampierre murals alone.
Why it matters · The structure of the picture gets settled in graphite, where a wrong line costs nothing, before any colour risk. By the time oil goes down, every decision is already made. The drawing is the painting; the paint only dresses it.
Henri Delaborde, Ingres: sa vie, ses travaux, sa doctrine, 1870
Engineer the figure from tracing-paper composites
Drew an arm, a leg, or a fold of drapery three or four times on one sheet, hunting the contour through short exploratory strokes, then laid tracing paper over the best versions to stack, shift, and refine them into a single master drawing.
Why it matters · It breaks the impossible task of drawing a perfect figure in one pass into parts that can each be solved on their own, then assembled. The final contour is engineered piece by piece, not caught in a single lucky attempt.
Technical studies of La Grande Odalisque; the Morgan Library & Museum
Judge the masses through half-closed eyes
Told his students to look at the live model through half-closed lids, squinting so the distracting local detail dropped away and only the primary masses of light and shadow remained.
Why it matters · You cannot place the structure of a head while you are busy with an eyelash. Squinting throws away the small information and leaves the big relationships of light and dark, which is what the drawing has to get right first.
Amaury-Duval, L'Atelier d'Ingres, 1878
Transfer the contour with a blind stylus
For a finished portrait he laid the resolved drawing over a fresh sheet and traced the contour with a hard point, inscribing colourless grooves into the paper below, then drew over those blind grooves in graphite. The graphite skips the low points, which proves the groove came first.
Why it matters · A contour you spent weeks resolving gets moved to the next surface without being re-drawn, and re-degraded, by hand. The transfer protects the decision. The cushioned drawing board under the sheet is what keeps the sharp point from tearing the paper.
The Morgan Library & Museum, "Ingres at the Morgan: Materials and Methods" (RTI study)
Square the grid to scale a composition
Divided a sheet into a grid of small and large squares to transfer or rescale a composition onto another sheet, square by square.
Why it matters · A small, fully resolved drawing becomes a large canvas with its proportions intact. The hard compositional decisions are made once, at the scale where they are easy to see, and then carried up faithfully.
The Morgan Library & Museum, "Ingres at the Morgan: Materials and Methods"
Scrape the wrong line off and burnish it smooth
Removed a wrong contour by scraping the paper fibres and graphite off the surface, then burnishing the spot flat again. The changes cluster in collars, cuffs, and the outlines of the torso.
Why it matters · An error is physically lifted out, not drawn over. The corrected line lands on clean paper, so the final contour stays as crisp as a first attempt. Nothing accumulates as a smudge under the answer.
The Morgan Library & Museum, "Ingres at the Morgan: Materials and Methods"
Hide the brush entirely
Abhorred the visible brushstroke and blended the oil with soft sable until no evidence of the brush was left: the porcelain, enamel-smooth surface, with local colours only faintly modelled in light by half-tones.
Why it matters · A smooth surface stops the paint from competing with the drawing. Where a Sargent wants you to see the stroke, Ingres wants you to see only the line and the form. The handling is engineered to disappear.
Ingres's stated detestation of visible brushwork; standard description of his finish
Bend the anatomy to serve the line
Elongated limbs and added vertebrae where a smoother, more harmonious contour demanded it. The back of La Grande Odalisque (1814) famously carries more vertebrae than a spine has.
Why it matters · He held the ideal contour to be more true than the literal skeleton. Line is the master and anatomy the servant. When the two conflict, the painter decides in favour of the curve. The "error" is a choice.
Contemporary critical record on La Grande Odalisque, 1819
Hold a painting for decades until the line is right
Reworked canvases across whole careers: Venus Anadyomène begun 1807 and finished 1848 (about forty years); The Source begun in the 1820s and completed 1856; Madame Moitessier begun 1844 and finished 1856.
Why it matters · Finish is governed by whether the drawing satisfies him, not by a deadline. The measurer never signs off until every relationship resolves. A painting is allowed to wait years for the painter to see what is still wrong.
Standard chronology; Amaury-Duval, L'Atelier d'Ingres (the master "never satisfied"), 1878