It looks to me like an acceptable addition to your power, but I am not a co-mod, so that isn't up to me.

However, the problem I would personally find in it is that you added a power to your character after having already established and agreed to the parameters that were previously set. It isn't really a problem, per se, since it has never actually been used in-character and so on and so forth. I would simply suggest talking it over with the owner or assigned moderaters before any actual changes were made. The sheet [i]is[/i] essentially documentation of the accepted character; no harm is done though, it's just future advice.