Step 5: Test Print Without Cutting
Make sure the red pointer is turned on and do a test run by pressing the GO button on the Helix. Watch that the laser seems to be doing what you expect. Be patient and let the whole job finish. Make any adjustments needed. I once failed to set the size in the print dialog (it defaults to a large size) and the laser started far from where I expected and went way past the edge of the acrylic.
After you make any corrections, do another test run! Test and correct until everything seems right then move on to the next step.