1. The quality of the printed patterns.
At the end of the day, you buy the theme presented in the online store. The first pitfall to watch out is: does the image presented in the online store really represent the final painting result? In another word, will you get what you see? Many online stores try to use real PHOTOs to present the Paint by Numbers kit offered, and not the final Paint by Numbers result you will get after painting. The major difference between photos and paintings is that the photos replicate all real-life details and paintings don’t! The two images below explain the differences. The one to the left is a photo, and the one to the left is a Painting from Paint by Numbers.
This is a typical example because in general, it is very difficult or impossible for Paint by Numbers paintings to depict the gradient effect such as sunshine and lightings.
Therefore, the Paint by Numbers paintings will have obvious borders between different color zones as shown below right in the clouds around the sun. In such cases the photos will look much more brilliant than the outcome of the Paint by Numbers painting Many sellers attempt to use photos as advertised product image and not the actual painting results.
On the other hand, the real photos contain thousands of colors, but Paint by Numbers paintings always have limited colors. The results can be very different from a photo to the actual painting derived from a Paint by Numbers kit.
We are not saying the painting effects are not as good as photos, they are just two different things and have their own advantages. The main point here is to let you be aware of, that it should be crystally clear what you will get is what you see, to avoid any negative surprises / disappointments after you spent weeks working on your Paint by Numbers kit.