Help with Shopify Rider Theme

I am looking for a Shopify expert who can help me with small customizations (CSS adjustments, html code insertions, etc.) of the layout of my Shopify Rider theme. I need someone who has experience in Shopify and can make the necessary changes to the layout to match my brand aesthetic.

Skills and Experience:
- Strong knowledge of Shopify and Shopify themes
- Experience in customizing Shopify themes, specifically the Rider theme
- Knowledge of HTML, CSS, and liquid coding
- Ability to create a visually appealing and user-friendly layout
- Most of the website is ready. Since I am not an expert in CSS and Liquid coding, I need quick help with padding, placing custom form codes in the places I need and making videos start playing upon loading the page etc.

I would prefer a mixture of both options, where the freelancer can handle all the initial modifications and also provide me with a step-by-step guide so that I can make future modifications myself.

As for the timeline, I need the task to be completed immediately. I am looking for someone who can start working on it right away and deliver the customized layout within a short timeframe.

If you have the skills and experience required for this project, please reach out to me with your portfolio and relevant experience.