Step 1 : Inspect and open package, Verify all contents are accounted for.
Step 2: Remove all paint, powder coat, oils from all surfaces where welding will be done so that material is left raw and ready to weld.
Step 3: Cover up any vital components that could be damaged from weld spatter & heat example : shocks, brake lines, hoses, wiring harnesses etc.
Step 4: Mock up Tube and flange into place to ensure proper fitment some grinding or modification may be required to get proper fitment .
Step 5: Tack Weld flange in place
Step 6: Finish welding into place
Step 7: Paint or powder coat to prevent rust this is a raw steel item .
Step 8: Take pictures, Show off how awesome your rig is now to your buddies !