From the settings displayed above, xpSplash produces the particle sim, on the left. xpOpenVDBMesher has then been used to give the results shown on the right.
The desired splash can be adjusted by clicking and dragging the yellow handles.
The result significantly alters the resulting simulation.
On the left, there are the default handle settings while, on the right, user-adjusted handles craft the crown shape.
xpSplash_Update 01_Handles_3.mp4
This animation shows the resulting splash simulation from the two settings, with the adjusted handles on the right.
xpSplash Object tab menu settings.
The radius of the bottom circle in the object.
Particles to be included in the splash will be those within the distance given in the Distance parameter from this circle, so the bottom circle should be within the Distance value of the particles or nothing will happen.