I slow-printed Happy Mac on photo paper, superglued the print to high impact polystyrene, and coated it once with a matte acrylic sealer and then once with a gloss acrylic sealer for weathering protection.
Modeling cement bonds the plastic pieces together and superglue holds the bolt in place, reinforced with a little dab of hot glue around the edges.
And it's a near-perfect fit! Not bad for a first try.
The black in the emblem seems a lot lighter in the photos than it does in Real Life™ for some reason, but otherwise I think it looks great!
Lemons → Lemonade.