I hope you are well today and thank you for your questions.
I would like to know how to change the single product page from this look:
to this look:
It by default displays like that which you can see on this page https://jevelin.shufflehound.com/product/basic-t-shirt/
If it is not displaying like that for you then could you please share me the page URL from your site where it is not displaying correctly so that i can troubleshoot it?
Also, how to setup “sold out” or “sale” stickers on top of the products like on this picture:
You can setup it by editing product as shown in the attached screenshots.