Youtube Featured Video 2 questions

here is an example page: http://www.haveagelessskin.com/our-services/botox-and-dysport

1. I am using the overlay popup method to show the first video and I'd like to show the video larger in the popup. I tried changing the iframe size in the class_ytvw_video_widget.php but that does not seem to do anything. Any suggestions?

2. The video thumbnail does not have a play icon like the popover video does. I'm afraid without the play icon, people wont know it's a video. Can I have the play icon there? Can I trick it and have my own image there?