Couple of questions. How long have you been pouring? If you are just starting you should focus more on getting simple pours down pat before you go on to more comlpicated stuff.
I'm not trying to hold you back; but in order to do those kinds of pours, and others, you have to master the basics. It's impossible to start at the top of the ladder, not that I'm a pro,but we've all started at the bottom and that's the only way to learn properly.
Don't take this post the wrong way.
www.novalures.com