Color: every icon must be 100% solid flat black (#000000) silhouette fill on a pure white background — no other colors, no gradients, no greys, no outlines-only shapes. Each icon should be a single clean solid black shape (or a small number of solid black shapes) so it is ready for a halftone dot-pattern fill to be applied afterward. Composition per icon: each icon centered within its own grid cell, simple and legible even at small sizes (16px), bold enough solid areas to hold a halftone pattern well, no thin hairline details that would break up under a dot pattern, no text or labels beyond symbolic marks (currency symbols, percent signs) that are part of the icon itself. Format intent: build every icon as clean scalable vector paths, single solid black fill per icon, no embedded raster elements, no photographic textures — deliverable must export cleanly to SVG and EPS as 20 separate cuttable/isolatable vector objects on one sheet, each within its own bounding box so they can be individually extracted and halftone-filled afterward.

The image shows a black and white icon of a person sitting in a chair with a percent sign in the background. The person is surrounded by a white background, and the percentage sign is clearly visible.