First, create some attributes you want to use, i have taken three attributes, motor, servo, deko. They should be global and drop-down. Create the “answers” for your attribues, b.e.
motor : None, Brushless, Brushless with prop
servo : None, 2xcheap, 2xexpensive
deko : None, colored tape
Put these attribues into a new attribute-set depending on default-set, remove any attribues you dont want and add the three new ones.
Create a configurable product depending on your new attribute-set. Choose only the three new attributes. Then give the information for the main-product, name, description, pricing and so on. Save the product.