any tips for the shell press?

[firedinglass]

 I have the zoozii vertical hole shell press and i have to admit i'm not getting on that well with it!   There isn't a tutorial on zooziis website), does anybody have any tips re getting the right shape initially or making the best of it ,please help before i'm tempted to throw it out of my workshop door in frustration.......

[Dragonfire Glass]

I tend to make a barrel to get the height right, turn it into a cone then add dots at the appropriate places.
Emphasise the scallop along the top by pressing down between the bumps with a razor tool or similar. 
Good luck with it!

[firedinglass]

aahhh....   well i was completely on the wrong tack!  I was making a lentil and trying to add base afterwards!  Will try your way and see if i get better results!   many thanks

[Dragonfire Glass]

my pleasure