you will have to guide me thru this 
No, @hitarth, custom themes are your own responsibility. This is not a coding forum. And it violates the rules of the forum to ask others to do your work for you. You have already been given more than enough guidance on how this can be accomplished. See https://www.manager.io/guides/10368. If you do not have the skills personally, hire a local programmer familiar with Liquid. Most competent web designers could accomplish this task quickly.
You can obtain all necessary basic information by searching the Guides for Theme and then read all 5 resulting articles.