I've only just recently started playing with embossing paste. I've mostly used it in single colours at a time- usually the white that it comes as, or with jazzing it up with reinkers. I've tried to do some blending, but hadn't had much success at first. After lots of practice and several garbaged attempts, I have started to get more consistent results that I've been happy with.
Some tips for success-
1) Make sure you have a bit more space than you're used to working in. Stuff gets messy and it's best if you can temporarily place tools and whatnot down away from the project. Likewise, make sure you have plenty of cleaning supplies handy.
2) Until you get better at blending, work in similar colour families. Start by colouring the paste with your lightest reinker. When you scrape off the excess, add in your next slightly darker reinker. This way each colour is built upon the previous colour. For my card here, I started with Orange Zest reinker, my next colour was Berry Sorbet, and then I finished with Pure Poppy.
3) Don't be afraid to make your own stencils. I did that here using the Quatrefoil coverplate.
I like the look of the swirl thread behind a main sentiment that I've been seeing a lot lately. On Laura's card she showed how to achieve this look by using the circle scribble vellum dies. I liked this choice since it was more controlled and it was super easy to attach the circle.
Stamps: Wet Paint I
Ink: Orange Zest, Berry Sorbet, Pure Poppy, Smokey Shadow
Paper: Smokey Shadow, White, Harvest Gold, Vellum
Accessories, etc. Circle Scribble dies, Wet Paint Cuts, Embossing Paste