I'm learning right now as well. Occasionally I can get something resembling art, most times I can't.

Sounds like you need a bit more air and to pour a bit faster. One of my mistakes I recently realized was that I've been pouring too slowly - when you pour too slowly, the textured/foamy part of the milk ends up sitting on top of the liquid milk at the spout and the liquid just slides out underneath. Thus you'll never get any of that white to show up. I think while we're learning, we're all a bit timid, want to take things slowly, and it's natural to want to pour slowly.

Here's a video of someone making latte art on the same machine you have, maybe you can mimic his technique and timing:

It reminds me the first time i learn latte art technique, i remember some of the video on youtube that help me understand the basic technique.

The video series from Dan kehn (with "the newbie" and lem butler)
https://www.youtube.com/watch?v=GBjHXd2yqNw

Learn to steam without milk (we dont want to waste a lot of milk to first learn to create the right micro foam)
https://www.youtube.com/watch?v=KxAvYoy ... FJ&index=5


This video help me when im struggling to have a repetable micro foam result
https://www.youtube.com/watch?v=DlUI0t3 ... FJ&index=8

And then video latte art technique with Christos Loukakis
https://www.youtube.com/watch?v=CD30nFO5v68
https://www.youtube.com/watch?v=P0lPtiSyfAA
in this video series i finally learn something simple yet crucial "touch the coffee (cup)"
the video with lem butler also says touch the cup, but not until i looked at this video series it finally hit my head.