How to add image to Bueno header

Try this: https://www.woothemes.com/support/theme-documentation/bueno/ there is an option to upload a logo from dashboard.

Thanks Emil,
I tried that but it only gives me two options:
1.) I can have a medium sized thumbprint image on the left side where a title normally is, or:
2.) I can have no image, but have text that actually gives the name of my blog.
Thanks for your help. Am I missing some other step?

That’s to replace the “Bueno” text with custom image (logo).

It still doesn’t go all away across the top like a header. It stops at my top menus. On the free wordpress, it’s possible to have a title (where “Bueno” is) and a header image. On my own site, https://www.bathingbeautiesla.com, there’s no header below the title, or just an image that only goes about halfway across.

All right, so you have few options:

a) https://i.imgur.com/yGgF6.jpg

body {
    background: red/yourimage.jpg center repeat-x;
}

b) https://i.imgur.com/qeb4h.jpg

#header {
    background: #ccc;
}

or

#header {
    background: red/header-image.jpg center no-repeat;
}

../red/ folder is the current style of your Bueno theme.

PS You can edit your stylesheet directly from your WP Dashboard.