Pizza ordering Program

I am supposed to create a program in excel that will take the prices in the spreadsheet and combine them with the topping(s) and pizza size selected from a userform to get a msgbox with topping(s) selected with size and total. With the msgbox, if the order is cancelled by hitting the cancel button, a new msgbox appears saying order cancelled and if the order is not cancelled the total is supposed to be displayed in cell B7.
I have attached my workbook.
Any and all help is greatly appreciated.