I'm editing the video now on youtube, going through the whole process of cutting out the long boring bits. It is a rather long video, but I guess you can skip to the interesting part if you'd like. If the video goes over well, I'll make more eventually. The time is a serious factor.
Also, please keep in mind that if you are using my videos for allergy safe baking, it is imperative that you verify all the ingredients with the manufacturer to ensure they don't contain any of the allergens you are avoiding. The lack of a "may contain" warning doesn't mean they are safe and I accept no liability for an allergic reaction (it is the reason I will not put brand names that I use on the site, because they may be safe in one country and not another due to packaging facilities).
Even when I bake cakes from home, I cannot 100% guarantee that there will be no issue, because I DO have these allergens in my house, but I bake everything as if it were for my own daughter, and take the utmost precautions to ensure that no cross contamination occurs.
Here is the video on me making the batter.. The recipe is included in the video, I hope it helps!