Shopify Product Page Layout Customization

I need my current Shopify product template re-worked into a clean, custom layout. The new page must present all product variables clearly, include a smooth quantity selector, highlight a “Subscribe & Save” option, and keep the Add to Cart button instantly visible... (Budget: $30 - $250 USD, Jobs: CSS, HTML, PHP, Shopify, Shopify Development, Shopify Templates, Web Design, Web Development)