Thank you for your question!
If you want to change the logo in your webstore just follow these steps:
1. Login to your control panel.
2. Visit your “Logo” tab.
3. Scroll down until you reach the "Upload your image" option.
4. Browse on your computer and choose your new logo.
5. Once the logo uploads it will automatically be added to your webstore.
6. You will immediately be able to see your new logo in your storefront!
Feel free to leave here a comment if you have any other related questions.