I can imagine this would be one of the simplest techniques there is in Blender, but I am a complete beginner to modeling. What I am trying to do is as follows: I made a shape in Adobe Illustrator, saved this as an SVG. Now the image is a front view of the model I am trying to create. All I want blender to do, is make a cylinder of the top (flat) view (for reference, the model I am trying to create is a dart barrel - which is always a cylinder with some cut-outs).
So image 1 is the front view. Image 2 is the current top view. Image 3 is what I want image 2 to look like. Simple enough I guess, but as said: complete beginner :)