perfect

my son who will be 5 in few days is in kindergarten, we live in the US and so he learns to read and to write. he was very ready in all aspects. the problem is with homework. he was asked to write is first name. something he can do for a while now. but sudenly he realized that what he writes doesnt look "perfect" so he got very upset. he keep eraseing again and again. and gets upset. he wants it to be perfect. how can we help our sweet boy?