Need HELP Today: Cake ideas????

I am making a lemon cake for dessert tonight. I am just doing a boxed cake (although, adding dream whip) and lemon frosting that is store bought. What can I add or do to make the cake look nice or taste even better? I am wondering if there is something I can put between the layers, etc.? Or something on top of the cake? Maybe lemon garnish or zest? Any ideas? I am so clueless!