Once you accept our quotation according to the form you submitted, we create an invoice and send you by email. The invoice contains all the details including a payment link where it says "Click here to pay this invoice". You click on that link and are redirected to Paypal website where you pay with your paypal account or credit/ debit card. You can also log in to your account at any time where in the invoice section you will be able to see all of your due and paid invoices, you can also pay from there if you have any due one.