i would still work out the central point of the wall and work out how many sheets up and down and left and right, as they will be a bugger to cut as they are so small, so the less cuts the better. Once youve worked it out run a batten along where the top of the bottom sheet will be, making sure its level. I would then start working upwards from here, and then go in and fill in at the bottom at the end. Hope it makes sense
I've had pretty good results cutting glass and ceramic mosaics as small as to 20mm square tiles like this.
take them off the sheet, and score them with a straight edge and glass cutter.
snap them, score line outwards, with two pairs of large, square nosed pliers.
You might want to attend to the cut edges of glass mosaics with some emery paper, so they dont cut.
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