How can I customize my 404 page on the MINIMAL theme?

Store Design
1

Hello,

I am trying to customize my 404 page in my MINIMAL theme. I would like to remove the header and footer and add a background image, search bar and text. Currently I’m stuck on where to place any of this. I do have the image file at the ready.

Below is what I have done so far:

*duplicated my store

*added this layout: theme.404-layout.liquid

*entered the code below to 404.liquid to link that to the new theme.404-layout.liquid :

{{ 'general.404.title' | t }}

{{ 'general.404.subtext_html' | t: link: routes.all_products_collection_url }}

{% layout "404-layout" %}

{{ 'general.404.title' | t }}

{{ 'general.404.subtext' | t }}

{{ 'general.404.link' | t }}{% include 'icon-arrow-right' %}

My store is https://www.TheWaterCanShop.myshopify.com

Password is ahdohy

Many thanks in advance. (Please be gentle. I’m new to coding and trying my best to learn).

Lynda