What good qualities can I write about myself in a cv. I have no experience?

hi, I'm 15 and I am wanting to write a cv as I am looking for a job. I have had no work experience,just babysitting. I don't do any out of school curricular activities either. My school report is average and I got an improvement needed for punctuality, so I can not include any of this in my cv. Please help me decide on what I can write in my cv. I have a list of good qualities that I think I demonstrate, for example I am responsible and reliable, but I don't know how to back up my judgement with evidence.