Elbow Placement in the Frog Stand?

In the course video, the athlete's elbows seem to be on the outside of his knees, but for whatever reason I cannot do the Frog Stand like that. It's far easier for me to place my elbows on the inside of my knees, near my adductors. Is that all right for mastery? They're pretty much the same as in this article: http://www.t-nation.com/free_online_article/sex_news_sports_funny/all_muscle_no_iron 

The photo shows a more advanced frog stand variation.

That's actually easier for me...