Hold your mouse over each button to see its purpose. To resize the face either use buttons provided or clear all other items out of the way or click and drag face to resize it. To modify the wig click on change wig button and then click on a thumbnail on the right.

To modify specs click on change specs button and then click on the thumbnail. You can select both female and male wigs to try them out online.  I had problems with this game in firefox, but it worked great with Internet Explorer.

Get your wig hair done here .