When creating a website, always take your viewers/customers into consideration. Do not design a website that appears real nice to you on your own PC and browser. Take into consideration, the number of web browsers in use and how your website will appear in those browsers as well. Also take note of the internet speed when designing, a lot of pictures or videos will cause frustration for users with slow internet speed, also note that some users aren't able to view pictures so ensure to include alt descriptions of the pictures and videos you have to cater for these viewers as well. When you understand these things and incorporate them into your website, your website will be gladly viewed and accessed by many satisfying viewers/customers.
