learn ways sketch cakes

hiw to scetchhi darling cakers,iam here by to Desperatly Begggggeveryones help,in order to become a bit more professional towards what i do and so in front of my client,i think i must know how to sketch a cake….please can you guys teach me. how?? online? manually? pleaseeeee,,iam bad atit,but im sure with a little technique help will do a gr8 difference…thank you sooooo much fir reading my message..God Bless you all,happy caking $$)$$$