How can I add my company logo to invoice

Hello Moalmousawi-tuto, 

Welcome to the Community page , 

If you follow the steps below to add a logo to your invoices. 

1. Select the Gear icon on the toolbar.
2. Under Your Company, select Custom Form Styles.
3. At the upper right, from the New style drop-down, select the appropriate form.
   Note: If you want to upload a logo on an existing template, find the template then select Edit under the Action column.
4. Go to the Design tab, then select Add your unique logo.
5. Select the box with Add a logo +, then the + on the next window.
6. Locate and select the image you want to use.
7. Select Open. Once uploading is done, select Save, then Done.

This link has all the information you need in regards to logos in Quickbooks.