Salmon difficulties

I do a trick where I produce some salmon sushi from the picture of sushi on my t-shirt. This trick goes over very well, but my salmon sushi are becoming more and more torn, and no one seems to be selling them anymore.

ティシャツの絵からサーモン寿司を出すマジックを最近結構やっている。ウケが良い。寿司自体がもうぼろぼろになっているが今どこでも売り切れだ。

I have been trying to make new sponge sushi salmon myself, but I am having some problems. The color I used for the rice is too stiff when it is dry, so the sushi does not regain its shape very quickly anymore. The color I used for the salmon part is flexible but seems to never actually dry. If the sushi gets even the slightest bit wet, it bleeds color like crazy. Which is not so good for my white t-shirt.

自分で新しいスポンジサーモンを何回か作ってみたが色々な問題がある。お米の分に使っていたペンキが乾いてから硬過ぎて、スポンジが早く膨らまない。サーモンの分に使ったペンキが逆に乾かないみたい。ちょっとだけ濡れたら、スポンジから半端ない量のペンキが漏れる…僕の白いティシャツに良くないね。