Meeting
It's wise to build in a cushion for your deadline. To get a clear idea of how long a project will take, break it down into smaller pieces (see below for more). If you aren't sure exactly how long each of those pieces takes, break them down into even smaller pieces. And for each piece, add a small cushion to your time estimate. Then add up the time estimates of all the pieces, and you'll have a cushion built in. This will allow for delays, and if you finish early, the client will be pleased.