Google has an image search feature many people don't know about. If you can take a picture, you may or may not get results there.
https://www.google.com/imghp?hl=en
Using the "advanced" image search I put in search words like bear, sunflower, bunny, cross-stitch but I didn't find anything like you are describing -- but maybe if you looked you might see something stylistically similar to have a starting point to search.
https://www.google.com/advanced_image_search
Good luck! Sounds adorable. Even if you can't find an exact guide, I'm sure it will be great.