Some think a painting should start with a grand vision and flow straight to the canvas, but it's arguably rarely how it works.

It is believed that many artists fumble through a messy middle, and the finished piece you see in a gallery is the result of a long, layered process with plenty of backtracking.

Start with the rough idea

Before any paint touches the surface, there's usually a thumbnail sketch. It's small, often just a few inches across, and it's about solving composition problems cheaply. You're deciding where the focal point sits, how the light falls, and what gets cropped out. For example, when I painted a coastal scene last year, my first thumbnail had the horizon dead center, and it looked static. Shifting the horizon up to the upper third changed the whole mood before I'd wasted a single tube of paint.

Transfer and block-in

Once the sketch feels right, you scale it up to the actual canvas or panel. Some artists grid it, some use a projector, some just freehand it with a light charcoal line. Then comes the block-in, which is the unattractive phase. You're laying down big shapes of color, not details. Think of it as painting by numbers with huge territories. If you're working in oils, this stage often uses thinned paint, almost like a wash, so you can wipe it off easily. Acrylic painters might use a mid-tone ground first, then map the darks and lights with broad strokes.

The value and color layering

Here's where most beginners rush and mess up. They try to nail the final color on the first pass, but experienced painters build in layers. You start with the darkest darks and lightest lights to establish a value range, then you mix toward the middle. In a portrait, that means laying in the shadow under the jaw before you even think about the skin tone. A common mistake is making everything too mid-range, so the painting looks flat. Pull those extremes early, and you'll have a roadmap for every later decision.

Refining edges and details

The block-in gives you a map, but the painting still looks like a construction site. The next step is tightening edges, which means deciding what's crisp and what melts into the background. A soft edge on a shadow keeps it airy; a hard edge on a highlight gives it pop. For a still life of apples, you'd sharpen the rim where the apple meets the table shadow, but let the back edge fade. This is also when you add the small stuff: the glint in an eye, the stitching on a sleeve, the texture of bark. But you do it selectively, not everywhere, because detail overload kills the illusion of space.

Glazing and final adjustments

After the painting dries, many oil painters go back over it with transparent glazes. A thin layer of ultramarine over a dried shadow can deepen it without muddiness. Acrylic artists do the same with fluid mediums. Then you step back, way back, and check the whole thing. You adjust a color that's too warm, push a background back with a cooler tone, or soften an edge you left too sharp. This is the longest phase for me, because it's all small, deliberate touches. One wrong glaze can undo an hour of work, so you go slowly.

The last step is varnishing, usually after the paint has cured for a few weeks in oils, or a few days in acrylics. Either spray varnish or brushed gloss works, but you want a removable one so future conservators can clean it without harming the paint.

That's the whole arc, from a scribble in a sketchbook to a protected, finished panel. Next time you see a painting up close, look for the layers, the soft edges, the places where the artist let brushstrokes show. Every one of those was a decision made in sequence. And if you're starting your own piece, remember the block-in is supposed to look rough. That's not failure; that's just step three. Go grab a brush and let the unattractive phase happen.