Mervlam,
No offence and I hate to be a wet blanket but the picture is very poorly taken. Studio photography is a fairly advanced area which requires careful planning especially with the lighting. In your case, the lighting is in a complete, haphazard mess and shows a total lack of knowledge on the part of the novice photographer. The final effect, as you can see, make the subjects very scary-looking and unflattering.
Since you're still a beginner, I'd advice you to start learning the basics of photography first before embarking on a serious study of studio photography. It's not as simply as you think or it looks.