You should check these points on the newly created website before updating your seniors. this is from my experience. you can add your test cases OR points in a comment. I will add that points in this post.
1) Check the Mobile version of your website. All the menus, Header, Footers
2) Check-in Desktop version.
3) Truncate all the tables and then visit your website.
this is to check if your database doesn't contain any data then also the website should work properly. you should handle all the cases/conditions at the first time only. this comes from practice only.