Update README.md

README.md

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 ## Papers
 
 - [Pre-train, Prompt, and Predict: A Systematic Survey of Prompting Methods in Natural Language Processing](https://arxiv.org/abs/2107.13586) 
+- [A Taxonomy of Prompt Modifiers for Text-To-Image Generation](https://arxiv.org/abs/2204.13988)
 
 ## Tools
 You can use the tools below to test out prompts
@@ -15,6 +16,8 @@ You can use the tools below to test out prompts
 ## Guides
 - [Prompt Engineering by co:here](https://docs.cohere.ai/docs/prompt-engineering)
 - [DALLE Prompt Book](https://dallery.gallery/the-dalle-2-prompt-book/)
+- [DALL·E 2 Prompt Engineering Guide](https://docs.google.com/document/d/11WlzjBT0xRpQhP9tFMtxzd0q6ANIdHPUBkMV-YB043U/edit#)
+- [Prompt Engineering Template](https://docs.google.com/spreadsheets/d/1-snKDn38-KypoYCk9XLPg799bHcNFSBAVu2HVvFEAkA/edit#gid=0)
 
 ## Courses/Lectures