Execute in small cumulative steps
Being incremental means we're going to be doing things in small steps. We can arrange our work so that each increment moves us towards our goal.
Increments can be as large or small as you need
We can make increments as big or as small as we want to. Shorter increments provide more opportunities for evaluating what we're doing.
Consider the result of each increment and adapt your approach
Ideally the result of each increment is cumulative; so our latest increment builds on our previous increment. At the end of each increment we can look at our results and consider whether our course of action is still valid. Combining increments with a consideration of how we are executing our work gives us a way to mitigate risks.