Had created my first Windows Live Writer plugin, Imgshow Plugin. By using Imgshow plugin, the user is able to use Imgshow Query to embed any multimedia content such as Youtube, Facebook Video, PDF, and any other Imgshow supported service.
I am using C#.net with Visual Studio 2008 environment to develop Windows Live Writer Plugin. I had learnt to embed the picture inside C#.net project and generate DLL file which is the plugin file, and just copied it into Windows Live Writer Plugin Folder and the plugin will automatically installed when you restarted your Windows Live Writer. I had learnt also C#.net windows asynchronous worker task in order to load external Imgshow API which sometimes a long process (to avoid my system lagging).
By watching the below video, you can learn more whats my works. I would make it better before releasing the plugin.