How can I add custom code to my draft order checkout page?

[Adeel-pl]

I added some custom code on the status/thank you page in Shopify using the Shopify dashboard

what if I want to add some custom code for my draft order page on the checkout screen?
is this possible in Shopify? if yes then how?

i.e. i want to add an image to this page 
https://glo-studio.com/checkouts/do/b7091fd133c685845b57533160d3807c/information