Building a Vocal Booth in my room

I've decided to just build a vocal booth in my room because I wouldn't really need a control room as the only thing I use for now is a PC. Can anyone draw a sketch for me using the template below? (either 3D or 2D) Many thanks!

Do a search here as this has been covered many times. Here's one to start: http://www.johnlsayers.com/phpBB2/viewtopic.php?p=51632 Plexiglass is worthless from an acoustic isolation stand point.

I didn't really jump right into the construction process of it but I made some actual measurements today and realized 10 x 6 would be much more than I need so I bumped it down to 4 x 6 feet. Anyways... I'm trying to build a model of it in Sketch Up but it's such a pain in the neck to go "inside" the box so that I know exactly where I'm putting the foam padding and all that jazz... and also creating doors. Before any building goes on, I want to have everything planned and set in stone. I'm not just gonna go to Lowe's or Home Depot, spend hundreds on supplies just to be asking myself "Now what" later. If anyone else can help designing me a vocal booth in Sketch Up I will give you my current file because I have no idea what I need how to use it properly. Many thanks.

You need to provide more details of your room, noise levels, isolation requirements etc for anyone to be able to help, also try the design forum section.