Using this plugin you can show your widgets in desired columns and rows. You can also display an icon beside the widget.
This plugin adds two options for widgets, one to set the width of the widget and also an option to show an icon beside the widget. You can define new rows of widgets using the Divider widget.
Since 0.2, there's a new "Spacer" widget which enables you to have blank columns. Awesome!
The whole thing also works on RTL layouts as well.