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As the beginners, one of the “mistake” have ever been made is spending much time in editing theme. My suggestion, try too look at search engine what the very suitable for you. Then modify it a bit. It is saving your time rather than making it from the first.
Do not spent your time to create your own theme from zero. It is available themes for you. One of available download theme for Blogger I have wrote it in last week. Now, here some theme for you using in Wordpress. Enjoy it. Press here.
Or have a look this one.
But remember this.
For Blogger theme must be decided to select from the start, unless you may lost your posting/ contents.
Otherwise in wordpress you can not use any theme if you are not upgrade your account in wordpress.com. To have the wordpress them as deep as you can I will guide you later on.
Happy blogging.
