Click through to the Opportunity record you wish to create the quote for then click the ‘Send Quote’ button
A new form should open up allowing you to configure your quote, including adding in your own logo, terms and other relevant information. However, you are able to configure a quote template so that you don’t need to enter terms, the text of the body of the quote email and upload the logo each time you send a quote, to see how to preconfigure a quote check out this help article, how to customise your quotes
Once you’ve entered in the relevant details you’ll notice the PDF preview update, you can click the magnifying glass to zoom in and double check it looks OK. The next step is to click the ‘Next’ button which will take you to the Send Email form where you can edit the message and subject of the email your potential customer will receive.