Working on a big canvas

I started to work on a big canvas. It's the bigger canvas that I've never painted and so I work in the lab, where I can paint with some vigorous brush strokes without fear of spots everywhere ^_^

I'm painting with my gouache colors on a piece of old (and raw) cotton fabric without treatment .

I think I'll work on it for some days, because it's the first time for me on a canvas like this and it's different from a smaller painting on a smaller canvas already on loom, but it's really excited for me and I'm feeling full of energy!

I took some pics for you, but they are not so good because the artificial light.