Colab adaptations AUTOMATIC1111 Webui and Dreambooth, train your model using this easy simple and fast colab, all you have to do is enter you huggingface token once, and it will cache all the files in GDrive, including the trained model and you will be able to use it directly from the colab, make sure you use high quality reference pictures for the training, enjoy !!
AUTOMATIC1111 DreamBooth
Dreambooth paper : https://dreambooth.github.io/
SD implementation by @XavierXiao : https://github.com/XavierXiao/Dreambooth-Stable-Diffusion