What is the best preparation for mosaicing an existing cement patio?

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We will be moving into our own home and there is a small cement patio in the backyard. It has a good size crack and I got the idea to do a mosaic over the entire surface. My concern is the crack continuing to open. What do you think?
q what is the best preparation for mosaicing an existing cement patio, concrete masonry, patio, This is the cement patio that I want to cover because of the crack in the cement with a mosaic
This is the cement patio that I want to cover because of the crack in the cement with a mosaic.
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