Using a potty training chart
Potty training charts work for one reason: a sticker is an instant, visible celebration, and toddlers run on instant. The chart turns a hundred small moments into something they can see growing.
Start with sitting
The first goal is "Sat on the potty", and it earns a sticker whether anything happens or not. Most children need a few days of just sitting before the rest follows. Add "Did a wee" and "Did a poo" as separate rows because they usually come at different times, and poo often takes longer.
Then the whole routine
Once wees are reliable, add the steps around them: "Told a grown-up in time", "Pulled pants up", "Washed hands". Later, "Dry all morning" and "Dry at nap time". Keep the chart to five or six rows at any one time; retire a step once it's automatic and add the next.
Stickers straight away
Keep the chart on the bathroom door at the child's height and the stickers within your reach. The sticker goes on at the potty, not later. Let them choose which one.
Rewards beyond stickers
Many families find stickers are enough. If you want a bigger reward, write it on the reward line and make it reachable in a few days: a new book, a trip to the park, a small toy they've been asking for. Don't tie the reward to a perfect week; accidents are part of learning.
Accidents
Nothing comes off the chart. An accident is simply a row without a sticker today. Clean up without fuss and move on; the next success gets the next sticker.
Boys and girls
The steps are the same. The boys and girls versions start with themes children often ask for, but any theme works for anyone; dinosaurs are popular with everyone.