Many thanks for providing your Filezilla screenshot.
Your root directory is named 'davebreen.com' and you have successfully uploaded your gallery folder (named 'Kayden') to your root directory.
You can now view your gallery (on its own web page) by visiting [Link removed.].
(I'll delete this link once you've had a chance to check it out.)
If you want to embed the gallery into an existing web page alongside other content, then all you have to do is add the following embedding code into the web page wherever you want the gallery to appear (and you can leave all your gallery files exactly where they are).
<!--START JUICEBOX EMBED-->
<script src="/Kayden/jbcore/juicebox.js"></script>
<script>
new juicebox({
baseUrl: "/Kayden/",
containerId: "juicebox-container",
galleryWidth: "100%",
galleryHeight: "600",
backgroundColor: "#222222"
});
</script>
<div id="juicebox-container"></div>
<!--END JUICEBOX EMBED-->
There should be no need to modify this embedding code at all (no matter where on your web server the embedding page is) but you can change the gallery dimensions and background color if you like.
If you are using a web design package to add the embedding code to a web page, then make sure that you add the embedding code (above) as HTML code and not plain text.