How to smooth oil based clay?

[cube5]

I am using with oil based clay (Roma plastilina) to create my dinosaur sculpture. I find it very hard to smooth the surface of the clay. In fact the best I can get is like a rough tree surface

Anyone with experience can share your way of doing this? Thank you in advance.

[Weaver]

Heat, mineral oil or rubbing alchohal (both used sparingly!) should work. It also depends on the clays hardness. I'm not an expert (only has a few sculpts in progress) but those should help. Do you have a 'kidney'? It's a tool that really helps with the initial smoothing of clay for me.

[cube5]

Heat, mineral oil or rubbing alchohal (both used sparingly!) should work. It also depends on the clays hardness. I'm not an expert (only has a few sculpts in progress) but those should help. Do you have a 'kidney'? It's a tool that really helps with the initial smoothing of clay for me.

Thanks very much for your kind help. My clay is medium hardness (#2 I think), is it better to use slightly harder one instead? I found out that there are quite a number of choices for kidney tool, metal and rubber, soft and hard.. Which one works better?

Sorry for so many questions because I am new to sculpture and have no prior knowledge. Thank you in advance

[cube5]

Also, what sculpting tools do you guys use or suggest? I haven't bought any tools yet. I just use my hand, small spoon right now. Thank you.