theory11 — Magic Tricks & the World's Finest Playing Cards
Handling: add a little bit
Variation: add a little more
Version: add a little more (starts to be really different)
Based on: my trick based on such and such
Inspired by: my trick inspired by such and such
Based on an idea of: based on idea of such and such
These are all pretty vague, but I think more importantly he didn't say at which stage we should be able to release our "original" effects.
Dictionary said:Original:
1. Present or existing from the beginning; first or earliest.
2. Created directly and personally by a particular artist; not a copy or imitation.