American Baker in Germany

We are continuing our series of how to dress up a sheet cake. I used some navy blue buttercream left over from another project.  But, as usual, I began with a frosted sheet cake.  Then, using only round piping tips, I put white, yellow and pink buttercream in piping tubes and fitted each of them with different sized piping tips. White was around size 8, yellow around a 4 or 5 and pink about a 12. I don't know exact sizes because my tips aren't labeled. Not pictured, I also filled a piping bag with navy blue buttercream with a size 2 piping tip.  I began with a squashed pearl border along the bottom of the cake with white buttercream.  Then, I piped little blobs around the top of the cake.  I touched the top of each blob with just a tap to keep the blobs from being peaks, and become more pearl-looking.  Then, I got out a script press tool with the word Congratulations on it.  I gently pressed it into the buttercream.  Then...