Hello friends; Is it possible create my own mockups and share with you? How can I do this?

Hi Mauricio,

There is Mockups Gallery that is meant for sharing assets. It's integrated with WireframeSketcher (see Help > Add Assets from Mockups Gallery). Right now the sharing workflow is to email me your contributions or updates and I'll review them and then put them online.

Let me know if this is what you are looking for.