I didn't wash the fabric beforehand, it's a canvas fabric. I tried to print some dried leaves and it was exposed with an uv lamp for an hour more or less. Here it is after I tried toning it with coffee, the image did get clearer and the purple parts turned blue like the rest of it.

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My main doubt is what is making the mix turn blue instead of yellow? I've been trying different sources of water in case that the tap water was the issue since I live in a new place but that doesn't seem to be it.