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Here is the tutorial.
Step 1
Front Plane>>Sketch.
Step 2
Use Spline and make this sketch about a center line.
Step 3
Mirror Spline about center line.
Step 4
Again make a spline about the end points of the two spline tangent to them.
Step 5
Exit the sketch. Right plane>>Sketch.
Step 6
Make a spline sketch like this.
Step 7
Exit the sketch. Curves>>Project Curve.
Step 8
Select both sketches.
Step 9
Now Filled surface.
Step 10
Select the curve. Click OK.
Step 11
Front plane>>Sketch.
Step 12
Make a circle.
Step 13
Trim Surface.
Step 14
Trim the leaf about the circle.
Step 15
Select the same sketch & then Extruded surface.
Step 16
Extrude the surface.
Step 17
While selecting front plane & Origin click Reference geometry>>Axis.
Step 18
Create a planar surface about the edge of the extruded surface.
Step 19
Thicken that edge.
Step 20
Now pattern the leaf surface as a body about the axis.
Step 21
Click Dome tool.
Step 22
Select the Thicken Surface.
Step 23
And we have the flower.
I can not do step 19 and as the result step 22. Can you mention the details?
After creating a planar surface on the edge of the extruded surface, I thickened the planar surface. And in step 22 i selected dome tool and then selected the top face of the thickened surface in step 19.
Using the thicken tool. Maybe you are accounting the error in which the bodies are not combined.