I've only knit maybe 2-3 things ever but I've never attempted Illusion Crochet. Honestly till you posted this, I never knew it could be done in crochet too. Though the only existing pattern was a cute heart. While hearts are not a bad thing, any one of my friends can quickly tell you I don't do 'cute'.
But I definitely do caffeine!!! So I decided to attempt to create my own pattern and with that I present my attempt at Illusion Crochet.
A mug of coffee with wisps of steam rising.
Dragonsinger of Hufflepuff
Here is the link to the Full size of the second photo if you need to see detail better.