How to put post content result above the shortcodes result?

Hi,

I’m in the development stage of my plugin. I know this is very easy question to an wp expert.

I created a script where my plugin supports shortcode. My shortcode works fine but I want to place my shortcode content below the post content. Is this possible?

Just wondering because when I added page and put the shortcode and content like this:
This is a post content
[PluginShortcode bar=foo]
And the result is this:
Shortcode content text here for my plugin ….
This is a post content…

I want my content page looks like this:
This is a post content
Shortcode content text here for my plugin ….

Any ideas from you would be greatly appreciated.

Thanks in advance.
Eugene