Hi Finema, for Flow you need to have a base surface and a target surface. You're missing the base surface, it should be a plane you place underneath your objects that you want to deform. Once you have that plane positioned, select just the objects you want to deform (not the base plane yet), then run Transform > Deform > Flow. When it asks you to pick the base surface then you pick the base plane and the location where you pick on it is significant. You want to click on it somewhere like this:


Then when you click on the target surface, the location that you click on it is also significant and is used to control how the base and target surfaces are aligned with each other. So you want to click on the target surface in a similar spot like this:




That should then give this type of result:


- Michael