How to edit theme files for enhanced product display in a fabric store?

Hello,

Please help with the following with this store:

High quality dressmaking fabrics, sewing patterns and craft supplies – Lamazi Fabrics

  1. Display price by metre and include a section as shown on this page example to calculate how much their selection is. Displayed by half metre increments. They wondered if there would be opportunity to change this to different increments in the future if needed.
  2. They upload and price up everything by 1/2 metre but want the product page to show by m price. Is this still possible?
  3. Remove the current Instagram token and re-link
  4. Include recommended products underneath which will be a thread, x2 fabrics and x2 patterns
  5. Add the custom code so that video can be uploaded due to the new Shopify update and make sure current changes are applied to the update theme. They have an edited theme so can’t apply this.

Please help

i have check this it can be done customization code

Can you give me an example for each?