Ms. Alvarez helped her mark the grid in pale pencil, lines so faint they would disappear under paint. She showed Tess how to measure from a fixed point, how to check a curve by stepping back, how to trust her eye more than the ruler when a line needed to feel alive rather than merely accurate. "A mural is not a photocopy," Ms. Alvarez said. "It is a translation. The wall has its own light, its own distance. Let the drawing breathe a little." Tess worked slowly, square by square, copying the curve of the pool, the tilt of a rock, the curl of seaweed. Sometimes a line came out too stiff, and she erased it gently with the side of her hand and tried again, softer this time. The pencil marks accumulated like a faint map, visible only if you stood close and knew what to look for.
Mara, again, did not paint over Tess. She arrived with a fresh bucket of water for rinsing brushes, a cloth for wiping hands, and a bag of apples from home. She held the sketchbook open when Tess needed both hands free, tilting it so the light did not glare on the page. When Tess climbed the ladder to mark the upper rocks, Mara held it steady and did not offer to climb up and do the high lines herself, even though she was taller and could have reached them more easily. Tess noticed the restraint and was grateful for it in a way she did not yet have words for. Protection, she was beginning to understand, did not always look like stepping in front of someone. Sometimes it looked like standing behind them, solid and unhurried, while they did the hard thing themselves.
Choosing and mixing colours took the rest of the second day, and it was slower work than Tess had expected. The paints in their jars looked bright and certain, but on the wall they changed. A blue that seemed perfect in the tray dried a little greyer. A green that looked like seaweed in the jar turned too yellow once it was spread thin. Tess mixed on a large palette board, adding a touch of white, then a touch of grey, then a little more blue, testing each mixture on a scrap of primed board before committing it to the wall. Ms. Alvarez watched and offered suggestions without taking the brush: try a little umber in the rock colour, she said, to keep it from looking flat; let the water have two blues, one for shadow and one for light. Tess tried, adjusted, tried again. One mixture dried wrong — a seaweed green that had looked rich when wet turned dull and chalky by the time she returned from class — and for a moment she felt the familiar sink of disappointment. Ms. Alvarez helped her scrape back the test patch and mix again, this time with less white and a drop of deep blue, and the new green held its depth as it dried. Tess wrote the successful mixture down in the margin of her sketchbook, in small, careful handwriting, so she would not lose it.
The third day began with the kind of clear, cold light that made Greyhaven look rinsed clean, and Tess arrived early, before the first bell, with her paint jars lined up in the order she would need them. She started with the water, because Ms. Alvarez had advised her to paint from the background forward, laying in the large shapes before the small details. The first brushstrokes of blue-grey across the oval of the pool felt like a commitment. Pencil could be erased. Paint, once it was on the wall, had to be lived with or painted over, and Tess's hand shook a little on the first long curve. The line wobbled, rising too high on one side, and she stopped, brush in mid-air, afraid she had ruined the shape before she had properly begun. Ms. Alvarez, who had come in early to check on her, did not sigh or reach for the brush. She said, "Breathe, and go over it again when it is dry, with the rock colour. A shaky line is not a ruined painting. It is a first line." Tess set the brush down, drank some water, and waited. When she returned to the curve later, she steadied her elbow against her other hand, the way she steadied it when painting fine details on paper, and the second stroke was calmer. The wobble became part of the edge of the water, a natural unevenness, like a real shoreline.