Sydney, childcare in Cheltenham GL52

I'm Sydney, I'm 16 and I've just finished my gcse's and would like to help people by looking after their children. I've got some experience, for example looking after siblings, cousins and also friends of families children. I like playing with children making sure they're happy and not upset, I could also cook them a little meal if needed. if possible I could take the child/children to the nearest park or go for walks.