I had prepped a bunch of drop flowers ahead of time, letting them dry for 24 hours to get them hard enough to move to the cake.
I hadn't planned to write anything on the cake - I was sending it to work with Arvid, so I didn't really want to write 'Happy Birthday'. So when I was making th icing, I just coloured the stuff I was going to use for icing any green, just for practicing. Then I decided I should write 'Happy Friday', but I felt really rushed to finish my cake in class (I spent a rediculous amount of time on the roses), so I didn't take the time to prep a better colour for writing. I wish I had - I think the green of the writing is just too bright. Oh well, I'll know for next time.
I think, on the whole, it turned out really nicely. I sent it to work with Arvid, and he said it was a hit (but what free and unexpected cake isn't). Here are a few more pictures. Enjoy.