E-Commerce UI & Payment Upgrade

My store is already online on a theme inspired by https://sageandsill.com/, but it still feels rough around the edges. I need a developer who can, in roughly one working day, turn it into a site that looks as professional as it performs.

Here’s what has to happen:
• UI polish across the homepage layout, product pages and navigation menu so every screen feels cohesive and modern.
• On the homepage specifically, design a fresh banner, surface a clean “Featured Products” strip and add attention-grabbing yet tasteful call-to-action buttons.
• Integrate PayPal, Stripe and razorpay, making sure both domestic and international shoppers move through checkout securely and smoothly.
• Build a dedicated product display section that can neatly separate and showcase our own creations beside imported items without visual clutter.
• Walk me through the full e-commerce workflow—inventory updates, order processing, basic marketing automations—so I’m confident running day-to-day operations after hand-off.

Please keep code readable, follow best practices for responsiveness and performance, and leave brief comments where future tweaks are likely. Deliverables are the updated theme files (or pull-request), payment gateway configurations, and a short usage guide or screen-share recording that covers the operational steps above.