Pokedstudio shares some techniques for creating multi-layered vector-based images that also have a textured, collaged look.
In this tutorial we will learn to create 3D elements in Illustrator, and layered elements that we can group into objects.
Using texture and layer effects in Photoshop to build up an illustration with these creations, I've created a monster from the depths of the earth intent on destroying all life as we know it - and having a party doing so.
While I'll guide you through how I created my image, you can of course take these skills to use with your own elements, composing any image you want in your own style. Using the skills that you pick up in this tutorial, you will be able to add interesting effects to your vector-based images, whatever they are.