By the way, the Getchu and illustration2vec links on the news page are broken.
Edit: This part from the Tips page might be why it initially didn't generate great images:
The input of the model consists of two parts, the random noise part and the condition part. If you generate a good image, you could try to fix the noise part and use random conditions to get more good images. We have observed that a good random noise is important for the better generation.
Edit 2: Actually, no. According to the news page, if the noise is fixed, the generated pictures would be all similar.