Is this page SEO friendly?

[Crazythrill646]

This is the website http://www.silvercalifornia.com
This is an example web page: http://silvercalifornia.com/pendant-earrings-set

The example web page is not in html format. supposing I added the standard seo meta tags (title / description / revisit / keywords etc:-) that are used in html pages of other websites, is it effective seo?
Will the html meta tag codes be suitable for xml web pages?
Does Google crawler also crawl xml websites?

Or will I have to convert the web page into html format?
If yes, will I need to work with a web designer? Or is it simple enough for me to do myself?
so the following code will work on an example webpage?

<title>example</title>
<meta name="description" content="example">
<meta name="keywords" content="example">
<meta name="robots" content="index, follow">

Is there any more seo code I need to add?