Tile mosaics

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1. Some source picture
2. Some color or grayscale tiles (plastic, ceramics, glass, etc.)
3. Time and patience

First, some comments to tiles. You need at least 3 colors (or grayscale) tile types. You can do it with 2 tile colors, but usually the more colors you use, the better result you get. You can use any tiles from plastic, ceramic, glass or stones.