Some one can give a look to my site krishea.pt and tell me what im doing wrong!
I dont know what to do more, see the pt vs, the other languages im not
interested. This lasts weeks im loosing traffic, i changed some pages,
improving some keywords and put more fotos.

I can not see the source code of your website for you may use
Javascript to stop this. I guess the website uses frames which is
totally not Search Engine friendly. There are many places the site can
improve to get more traffic:
1) Do not use Frame if you already used.
2) Minimize the code of Javascript, if you have to use it, try to put
the code in the bottom of the code other than in the top.
3) Pick up good keywords(product name, website name ect.) and write
meta title and meta description for most pages, especially homepage
and category pages.
4) Try to get more out links, i.e exchange links with websites that
have similar content.

Hope this will help.

You need more links, really.

You can try creating content, aimed to inform and educate your target
audience - this will get you traffic and links. Here's an article on
quality content:
http://www.improvetheweb.com/link-building-strategies-using-quality-content/

Of course, you can use directory submission services, such as
addurl.nu, but dont't expect your traffic to skyrocket.

You need to do your keyword research and use keywords in the title
tags (meta tags don't help much, but keep them unique for each page,
nevertheless).
http://www.improvetheweb.com/how-to-conduct-your-keyword-research-and-make-your-seo-more-efficient/

As I look at the source on your home page,  I see a few areas of
improvement for your search engine traffic.

First of all, Your title needs to be stronger. "krishea - shop"
doesn't tell me anything worthwhile.  Use some of your target keywords
in the title, for better relevancy.

Second, I saw this in the meta information:

<META NAME="revisit-after" CONTENT="30 days">

I would change this to 2 days instead of 30, assuming the robots are
following the meta tags, they should reindex your page, more
frequently.

You may want to clean up your code.  I ran your page through an HTML
validator and discovered 3 errors and 89 warnings.  Use the TidyHTML
extension in Firefox to discover these errors and resolve them.

Also, get rid of the Flash.  the entire top third of your page is in
Flash, which is not general not readable or indexable by the search
engines.

Put your Google Analytics tracking code at the bottom of your footer. 
By doing this, your page will load and then be tracked.  Sometimes
Google is a bit long to process and the slows the display of the page.

When possible, make use of H1 H2 and H3 tags.  and use your keywords
within these takes too increase relevancy.

If you're looking for traffic, you also would want to look into free
directory submissions.  not only do you get back lengths.  You also
get traffic from the people clicking through.