Ditto most of the advice above. Four simple questions:

1. Can you fly straight and level across the field from one end to the other with no inputs other than very slight elevator and aileron inputs?
2. Can you fly straight and level across the field from one end to the other with no inputs other than very slight elevator and aileron inputs, while inverted?
3. Can you fly knife edge straight and level from one end of the field to the other with only rudder inputs?
4. Can you roll from each previously mentioned position to another without dropping the nose, pulling nose up, or changing course?

When you can execute all four of those scenarios, you will be doing the slow roll.

Can I do what I've told you to do? .....

Only with three of my 20+ planes; My Venus, Balsa Nova, and sometimes my Parkzone T-28.<br type="_moz" />