Spermacoce verticillata - Buttonweed attempt.

Hello!
Here is an attempt of a brazilian wildcaught shrubby weed.
In June 2013, i collected it in a nearby region. It was a plant with a few inches high, but as I liked her, i took it.
It seems to be fair for a ''mame''. Gets good by cuttings, it sprouts vigorously, grows well, but, it has the cons: spaced internodes [might be fixed]; abundant blooms in the ''middle'' of gems which can abort weak branches; and the possibility of its lifetime be short [hope she lasts at least 5 years with me.].

I'm trying to lead it in a natural style. Here are the pictures:

When collected:


After recovered:


Then it bloomed:


Now, after prune, its like that:


I think it's doing OK due to the peculiarity of this species.

What do you think? Any advices?

Thanks, regards,
Victor.

Interesting, I like the small size and I like the flowers. I'm not familiar with this species, my climate is too cold. Looks interesting. I would love to see pictures as this tree progresses over the years. Thanks for sharing.