The traditional way to teach Aikido is for the student to interpret as best he can the throw demonstrated by the sensei. Sensei will observe and adjust any tehnique in your throw. Again you must try and emulate as best you can the throw keeping senseis adjustments in mind. If your training with a partner that seems to be doing the throw better than you ask him for assistance. As a last resort ask sensei how to make it right. I have found this helps develope my visual cognitive skills. (ie,The more I try to visually interperet senseis demo the better I get at it). I think part of it has to do with the throws themselves are made up of a combination of subtechniques that tend to be interchangable, and combine with other subtechniques to make other throws. Hope this made sense, and is helpful in some way. Kelly