You may know that how to create a chart. The Keyboard shortcut for creating a chart is Alt+F1. It is a simple & default chart. You can change the chart type (i.e. Pie chart, bar graph, Line Chart, Scatter & etc...). But do you know that we can change shape of chart by using auto shape & also Text. If you want to change the shape of chart so Insert a shape : Insert -> Shape -> Select Shape & format it as you want (Colour & borders etc). Copy shape & Click on bar (If you are using bar graph) then Format Data Series - > Fill -> Picture or text-> Clip Board. You can add text with same way.