I start a new pour by mixing my colors. I used peaches, pinks, blues, yellow, and gold for this pour. Pick just a couple accent colors you only use a little of (usually the dark ones) so that they don't take over the other colors. I always use a lot more of the main colors I want for a pour.
Mix the acrylic with water and/or floetrol. For this pour, I used about 3 parts paint to 1 part water to 1 part floetrol. I've used just water before and think the results are just as good. You want the mixture runny so that it spreads easily with the blow dryer. You can see how thin mine is in the video above.