Your product page looking good at all. but you can add product thumb image slider that make more professional product page.
For home page:
1. make header as sticky on scroll so user can navigate it even from bottom of page.
2. Customize testimonial section and add image of user with so look nice.
3. Add newsletter section at bottom or in footer.
4. Remove power by shopify from footer
5. add and email subscription app.
6. Give some discount on product to attract user.