Overall this is a great book. However, a few concepts are described too briefly to be practical IMO. Primarily I am referring to the Death Posture v2. If you find this uninteresting, or it is not your preferred sigil activation technique, then don't bother reading any further. However, for me, it is the only real practical technique. The description in the book is far too short, is somewhat unclear and doesn't quite make sense. Needs re-editing. He mentions twitching your 'upper arms', then later twitching your 'arms'. What exactly does this mean? Also he says that each twitch should be no longer than a split second, but I'd like to see someone perform all of these twitches in less than half a second that he states - assuming they knew how to do it properly. He spends more book space discussing the DPv2 rather than actually describing it properly. Many authors in general often tend to do this type of thing. ;-) I found it slightly frustrating and searched the net for more information about this DPv2. I discovered that he briefly describes Sigil magic in his book 'High Magic'. This actually summarises the concepts of Sigil magic more clearly than he does in his Sigil Magic book ironically, although it does not cover all types of sigil creation. It also includes a description of the DPv2, which is actually much clearer than in this book. However, the technique described is not the same and does not include the chest twitch. I am not sure how much difference it really makes, but it would be good to have some clarity and consistency as to what he personally recommends. Ultimately I can figure out my own preferred way of doing it. Still, buying a second book is no bad thing, but it does mean the author makes a little more money. ;-)