I used a stamp by Inkadinkado for the clouds of smoke coming out of the engine by selectively inking one circle at a time. It was fiddly, and I wasn't sure whether it was going to turn out, so I did it on a piece of the same cardstock as the base layer of the card, just in case I screwed it up! I then layered with it giving it the 'white on white' look that just makes me so happy ;)
I liked the look of the scallops without a sentiment cluttering everything up, so I stamped one on the inside:
Size of card: 4" square
Card/paper - Quill white cardstock, Polka Dots are from: Inque Boutique "Isn't it Romantic" 6x6 paper pad, Cupcakes are from: Studio B "Party Girl" paper pad
Stamp - My Sentiments Exactly "Birthday Sentiments", Cupcake Cuties "Boy Toy Elements" digital stamp, Inkadinkado "Circles and Dots"
Ink - Printer, Versacolor "Cement"
Extra - Foam tape
Tools - Fiskars paper trimmer, Cre8tive spring scissors, Fiskars scallop border punch, Sanding block, Zig 2-way glue, Helmar tape runner
Thanks for looking!