I echo the others. It is a fairly frequent occurence. It is refreshing to find someone who realises what they have done and wants to right it.
It is usually only a reportable issue to the ATCO on duty (personnal view) when it may have endangered another aircraft eg in the circuit etc. And depending on how much you infringed the ATZ.
You have obviously realised the mistake and learnt from it. So I wouldn't lose too much sleep over it.
