cracking paint

[l.jward@btinternet.com]

Hi, I wonder if anyone can help me ive bought my first place and working my way through decorating. As i cant afford to have the place replastered ive lined all the walls and i bought superfresco paper for all the rooms everythhing was great until today, I done my second coat of paint and left 24 hours in between doing so when i went back all 4 walls had tiny cracks all over it looks horrendous. I dont know why ive done nothing different ive used only dulux paint and cant understand whats happened if anyone can help please do!! :) Id love to put this right!!