Aspen (Populus tremula)

I have tried to collect aspen for bonsai before but I have never managed to keep them alive and it's very rare to find one that is sutable for bonsai. Well, I found this one this spring, but since I had such bad experience collcting them, I didn't really belive that this one would survive, but it did! It has grown quite well so now I have an aspen that I think is quite repectabe (for an aspen) I don't think I have ever seen one as a bonsai before when I think of it.