
I have an upscaled version of the clouds here named 'clouds_upscaled'. To use it, simply move the old texture into the 'Cloud storage' folder (see what I did there?) and rename the upscaled texture to 'clouds' (capitalisation matters). This is suited to work with the 'Fast' cloud setting in your Minecraft settings, otherwise results will end up looking strange. To switch back, simply do the same in reverse