How do I change the default email so my client recieves the emails, not me?

If I understand you correctly, you seem to be wanting to change the recipient email address of your Email Notifications. You can change the recipient address by simply going to:

Setup & Embed > Emails, and clicking on the desired Email Notification.

Once there, you should scroll to bottom and click on Reply-To and Recipient Settings, and change your recipient address in the window that opens.

You can refer to this guide for details: Setting Up Email Notifications

Please let us know if you need further assistance.