When i did it, i printed out the logo.cut it out as a stencil and painted it on a thin peice of fondant same color as the cake,i then applied it when it dried. Or just paint it straight on your cake.
Happy Birthday. I make mine , but it's usually a flavour I really like, and I use that opportunity to practise a new design , so incase it's too difficult, i'll just abandon it without guilt. I also use any premium ingredient I might...