Hi i wanted to make the slider slightly smaller and add the right widget section next to it, right under the menu.
any idea how i can do this? thank you in advance!
There is no easy way to get this done.
It requires a heavy modification that it might be easier to disable existing slider and replace it with any slider plugin.
If you are good at HTML/CSS/PHP you might want to look into header-extensions.php where slider related code is located and start modifying from there.