I had a request to show how I sometimes go about doing 2.5d patterns using blender.
The main difference is the 2.5d model is not meant to be 3d from the very start. You are aiming for a specific image and perspective that will not be able to be rotated in 3d space for other views or at least not normally.
Did a free hand model drawing with the grease pencil as a reference and then built a 4 layer model that I could port into CW. Sorry my screen capture software does not capture the cursor so can be a little difficult to follow completely but should have all the key points on there.
As can be seen in the video there are 4 different pieces at different levels/layers that create depth in the pattern. Each is separate but since the perspective is hiding this fact it all works out.
The pattern is not meant to be anything good other than showing the completed pattern.
https://www.youtube.com/watch?v=Soly...ature=youtu.be