You'll use the first table on page 3, pertaining to the topic Messing Up and then you'll make a roll using the number of d6s as indicated by the rightmost column of the table, under "fortune roll" (there you'll see indicared 0D, 1D, 3D ignore criticals etc).
When you roll the dice, take the result as you would in any blades normal roll and find it in the numbered list that is right below.
i.e. Let's say I need to generate a risky consequence by rolling 4 on a action roll and roll in the consequences table, using one die that lands on a 5. This leads me to the complications table. Knowing I'd use standard complications for risky consequences, I select that table and roll again, landing on a 3. My action has brought unwanted attention, and I take 1 heat, justifying it in my notes as to how evidences were left or a reliable witnessing of the event happens.