Include only necessary fields to avoid overwhelming users. Too many fields can lead to abandonment. If possible, consolidate the order form into a single page to reduce navigation steps.
Use auto-fill features for fields like address and contact information to save users time. Provide instant feedback on input errors (e.g., invalid email format) to help users correct mistakes on the fly.
Optimize images and scripts to ensure the form loads quickly. Implement caching mechanisms for repeated elements and common data.
If a multi-step form is necessary, use progress indicators to show users how far along they are in the process. Provide easy access to customer support (e.g., live chat, help links) throughout the form.
Ensure the form integrates smoothly with WHMCS for handling orders, billing, and client management.
Ensure the form is secure with SSL encryption to protect user data. Display security badges and trust seals to reassure users about the safety of their transaction.