Organic Forms: Stretched, squeezed, twisted forms that can be used as base building blocks of more complex forms. For more on this, see this guide. 
Bent And Twisted Forms
Take primitive forms to the next level by bending and twisting them.Twisted Box
3D model of a box that is twisted. This model can be a great starting point for a pose where the torso is twisted.
Bent Cylinder
Three-dimensional form that you can rotate and draw.
Bent Slab
Three-dimensional form that you can rotate and draw.
Bent Cone
Three-dimensional form that you can rotate and draw.
Bent Pyramid
Three-dimensional form that you can rotate and draw.
Stretched And Squeezed Forms
Take primitive forms, and stretch and squeeze them.Stretched / Squeezed Box
Three-dimensional form that you can rotate and draw.
Stretched / Squeezed Cylinder
Three-dimensional form that you can rotate and draw.
Stretched / Squeezed Sphere
Three-dimensional form that you can rotate and draw.
Stretched / Squeezed Cone
Three-dimensional form that you can rotate and draw.
Stretched / Squeezed Pyramid
Three-dimensional form that you can rotate and draw.
Varying Deformed Organic Forms
Choose this model if you just want to practice a variation of organic forms.
Traced Forms
Forms following a line.Curvy Box
Three-dimensional form that you can rotate and draw.
Curvy Cylinder
Three-dimensional form that you can rotate and draw.
Curved Cigar
Three-dimensional form that you can rotate and draw.
Coil
Three-dimensional form that you can rotate and draw.
Mollusc Shell
The mollusc shell! A beautiful exponential growing form found in nature. Inspired by posts like this one by rafaelaraujo2222.
Cylinder-Symmetric Forms
Various objects that are symmetric around a line.Curve Rotated Around A Line
This model is created by generating a random curve and then tracing it around a center line.
Millstone
A millstone, also useful as a simplification for a wheel to try to practice drawing.
SciFi Button
A SciFi button. Notice the space between the edge and the button. Clothes often fold around a neck or arm like that.
Blobs
Basic organic forms.Floating Blobs
Three-dimensional form that you can rotate and draw.
Blob-Based Worms
Three-dimensional form that you can rotate and draw.
Floating Blobs With Floor
Three-dimensional form that you can rotate and draw.
Blob-Based Worms With Floor
Three-dimensional form that you can rotate and draw.
Varying Blob Models
Choose this model if you just want to practice a variation of blob forms.
Folding
Sheets folding.Folding Arrow
This model was inspired by Peter Han's Dynamic Sketching course and is also a great companion and addition to Artwod's lesson materials.
Folding Sheet
A sheet of paper folded in space, with its bounding box. Try to draw the box and then place the sheet inside the box.