I don't know whether you're asking how to match elements perfectly in a design or how to add these types of elements.
In most of the websites you've provided they are just background images set in the CSS. The navigation bar background images on Sunday Best and Pintura are basically a set width, which probably isn't recommended as navigation bars can grow, especially if they're dynamic such as a WordPress site.
Check this out for a little more help on the subject.
Sunday Best (nav bar) Sweet Cake ("follow us" and "seriously taste cakes") Pintura e ("nav", "cart" and "body titles")
i'm suscribed to lynda but I can't find any topic related to this technique
I'm sorry....what is your question?
Are you asking how to add a bg image or where to find the graphics?
Your question is really hard to answer;
I don't know whether you're asking how to match elements perfectly in a design or how to add these types of elements.
In most of the websites you've provided they are just background images set in the CSS. The navigation bar background images on Sunday Best and Pintura are basically a set width, which probably isn't recommended as navigation bars can grow, especially if they're dynamic such as a WordPress site.
Check this out for a little more help on the subject.