I’m not a Sudoku enthusiast, but I stumbled upon this cool Sudoku game called “Sushi Sudoku.” It’s a free game by Agame.com. Basically you play Sudoku with a broad sushi assortment.
The numbers are replaced with sushi. Every type of sushi can be placed only once in each row, column and block.

http://www.agame.com/game/sushi-sudoku.html

Here is the play menu:

PRACTICE BOARDS
Learn the path. Play smaller boards

QUICK PLAY
Choose your course. Any level of difficulty.

FULL COURSE
Progress through all four courses to attain the level of master.

So you want to make your own sushi for the first time and you are searching for some ideas.
This video is full of presentation ideas from ugly to beautiful. You will learn something from ugly ones. Some of them can be defined as overkill, messy, soggy looking and poorly combined colors. Those are the ones you don’t want your sushi to turn out. Sushi making after all is a form of art. Having a theme, using creativity, and choosing the right serving plates determine how appealing your work of art is to sushi lovers.