Zentangle and Mailart

This envelope will be posted soon. I am going to send it to the USA. On the envie there will be some stamps and the address (on the big flower).
I am taking part in Diva's Weekly Challenge. I used organic tangle patterns.  It is the task of this week.

The back side -

One more mailart (partly a collage) - 

Two and more colors

Here is my tile for Diva's Weekly Challenge. Here I used 2 colors.

In fact I prefer more colors))