Need help in Studio Construction

Hi, Probably am the only guy from Africa in this forum LOL. Great job Mr. John and the rest of the moderator on this forum. Am Adeniyi francis from Nigeria, West Africa. Is being a while that i have searching for and how to build studio before i found this great site. I am not very good in drawing but i have been trying to use the sketch up i downloaded from the link provided on this forum. I intend building my own room studio but i do not know how to make up the sketch. The size of my room now 12ft by 14ft. I would be glad if i can be assisted in the design. Thanks My best Regard Adeniyi Francis From Nigeria