How can I replace my current header with a new one using code

[Worldwidemedals]

Hello, I am using the dawn theme but I do not like the header. How can I make a simple header (like the one from this website), using code. I just want the logo (image not text) on the left, search bar next to it, and then login/register on the right. Thanks for your help!

[AnneLuo]

Hi, @Worldwidemedals

I can help you with it. So I need to access your store as a collaborator if possible.

[Worldwidemedals]

Okay, I made it open for collaborator requests.

[AnneLuo]

Please send me your collaborator code and store URL. You can get the collaborator code from Settings > Users and Permissions.

[Worldwidemedals]

Code is 6739

Url: WorldWideMedals

[AnneLuo]

I have applied the access. Please accept.

[Worldwidemedals]

I accepted