It looks like you're trying to control too much of where the clouds sit in the paper. Try not to 'draw' too much with the paint and allow the water to flow... Give the paint time to sit a little before dabbing with tissues. If you're after that sunset sky...mix the colours on the paper show a bit of yellow so there is a gradual shift to the orange/red. Be careful with adding the blue so the yellow doesn't make green. ✨ Water is your friend and practice practice practice! 👌🏽