Once you've found the keyword phrases you'll be using on your webpage, effective SEO keyword optimization is about placing your keyword phrase in the appropriate tags for each web page and using them appropriately throughout your page's copy.
Before we get started, let me suggest using only one keyword phrase per page. By optimizing your pages for several phrases it's that much more difficult for the search engines to determine what your page is about.
Also, use long tail keywords when possible. These are the more descriptive phrases that give attract more targeted readers to your page.
For example 'running shoes' is a core keyword phrase, however using a more descriptive long tail keywords like:
'women's red running shoes' or 'women's large sized running shoes', you will attract precisely the targeted visitors you're looking for and put you up against less competition.
Step 1: Place your keywords in the Title Tag
The first and most significant place to put your keyword phrase is in the title tag of your page. This is what the search engines will use for your site listing in the search engines. It also displays at the top left of the browser window when a visitor lands on your web page.
Most website creation tools will have a section for including your keywords in the title tag, however if that's not the case, use this code for your title tag:

<title> Keyword phrase </title>

Step 2: Use your Description Tag Wisely
The description tag should contain your keyword phrase somewhere in the tag. Your description is also something that will display in the search engine results but it's also a chance for you to write a compelling statement about the page that will encourage a click.
Think of this as free advertising.
Writing a dull page description might be descriptive but it won't do anything for your visitors intrigue.
Help guarantee the click by writing a description that not only includes your keywords but also includes a benefit and a call to action.
For example: Professional, experienced New York wedding photographer isn't likely to get as many clicks as writing:
'Professional, experienced New York Wedding Photographer - Free engagement photos with contract. Visit us Today!"
To add a Description tag, use this code:

<meta name="description" content="Description goes here" />

Step 3: Use Headings and Subheadings Within Your Content
These heading and subheading tags are important to the structure of your page so use them often.
Heading tags use the following code:

<h1> heading 1 using keywords </h1>
<h2> heading 2 using keywords </h2>
<h3> heading 2 using keywords </h3>