When you say blank cube do you mean a template or a net for a blank cube? are you going to use it for your toy's template? if so then i think that is a good idea for a beginner like you, but after this you should REALLY try and avoid taking bits and pieces of other templates. But to make it easier for you on your first try, use this one.
But remember, after this model try and create ALL parts of your model from scratch. Just wondering man, whats your idea for this model? What is it going to look like? What is the concept behind it? will it be an alien, a vehicle, an animal, a cute character, an Urban kinda Character, a building or just an interesting variation on the human form eg hoody by DMC or Hedkase by Nicebunny.
Good luck man!
Oh btw, if ya want to contact me use my email - firstname.lastname@example.org