Make a piston in Creo Elements Pro Exercise

Till now I have completed the short tutorials of some basic tools of creo Elements/Pro and I think on the basics of those tutorials you can make some of part that looks interesting.

For a simple exercise
Try to make a piston without connecting rod you have to select the dimensions by yourself or you can  use the dimensions shown in fig .

But I am giving you short steps:

1)      Make a circle of  and extrude it so it become a cylinder

2)      Make extrude cut at the one end of cylinder

3)      Make a hole at the center of the cylinder for this you should have to draw a datum plane that is 50 units away from the plan that is parallel to the length side of cylinder

4)      For making grooves for piston rings use Revolve tool after sketch

This test you should have to attempt  first  and after some days I will posts its method.