Step 1: Determining Form & Sweets
The first step in creating a Sweetling is determining its form and primary body material. As thematically the Theyra pulls from the individuals tastes and desires, ideally the material(s) and species chosen are ones you personally enjoy or have a strong connection to.
On the Material front, anything with a decent Sugar (sucrose) content is fair game. The image shows some of the major categories of sucrose-based treats. The ideas section over in lists is also a good reference if needed.
On the Form front: any species real, fantasy, or derivative (Pokemon, for instance) will work. The image shows some of the major categories of creatures.
Decide your chosen material and species, and then hit continue.