Purchase Order Customization

ERPNext Buying
1

Hello , Iam New in ERPNEXT ,i want to customize the printout of local purchase order so please advice

2

https://frappe.github.io/erpnext/user/manual/en/customize-erpnext/articles/making-custom-reports-in-erpnext.html

3

this it for reports i need to custom the purchase order printout ,once i print so it will show the purchase order as i need how can customize it thanks.

4