Safety
 
The safety of both yourself and third parties must be taken into consideration at all times, never attempt anything that is beyond your capabilities. You must think and plan ahead at all times, be able to foresee the consequences of your actions with regards to not only yourself but others around you. The majority of accidents are caused by negligence; lapses in concentration can result in serious repercussions for the tree, yourself or others around you! Do not undertake work that borders public footpaths etc where the general public could be put at risk, and never work close to any type of overhead cable.