Simply sandi's preset shapes
Click here for tutorial table of contents
Click graphic below to receive the zip file 
you wish to use
Because preset shapes are not interchangable between all versions of psp, I have left in .pspimage, you can export them as a shape, or just use them like they are.
For this birdbath, I just used the preset shape with settings of retain shape.  Then I used the soften setting for retouch tool at size 65, hardness, opacity and density at 100, step 25, do it once lightly, then go to effects, sharpen, sharpen more.  If you do it in vectors and work on each layer individually you can get the shading done better