Two cents
Hey. As with any video, you must be congratulated for sitting down and setting forth on a journey to create something magical.
Also as with any video we post, it's not always the best thing to post only positives- just as only negatives aren't productive either. For this reason, this post will include both ;]
I must admit that I (along with many others... cough cough Luke cough) strongly believe that loops should be reserved for 'animations' rather than levitations; less is usually more. Have I levitated a leaf or a dollar? Of course. We all have. However, levitations seem to lend themselves to a notion of strings or wires or cables rather than esoteric 'know how'. I'm glad that in this video, you did not approach a situation such as making the pen stand on end but to rather enjoy the subtle movements and eventually drop the pen. While it may be a nuance, it certainly made for a more 'magical' effect. Leave the levitations for people with wands who live in cupboards...
On a separate note, engaging a loop can be as dangerous as using an invisible deck without ample practice. (Wait, there are five upside down cards- I just saw them. Wait, lemme see your palms, you must have something there.) Yeigal and Fin both suggest a rubbing of the hands together with a slight downward curve of your middle as the best method whilst talking and 'building static'. I personally never mention static being that although it is an illogical explanation, it is still an explanation that I feel takes away from 'magical empowerment' for lack of a better phrase. In almost a nervous gesture, I rub my hands together, then clasp them as I set up for the effect. This serves a dual purpose as now time separates the engagement from the act as well as making the engagement that much more natural.
Loops are fish- anyone can get them and anyone can enjoy them, practice is the fishing pole that separates us...