Answer:
Yes, they look good.
Some tips for posting images of traditional art:
-try to keep your hand out of the frame
-put a larger piece of paper in the back then take a picture (or just anything so it has a solid color background or simple texture)
-make sure you aren't tilting your artwork while taking the picture, or it will look distorted (use a flat surface and keep your camera parallel; put the artwork on a table or something)
-keep the lighting consistent
-use a camera with a higher resolution if possible
-edit the image so the colors look similar to how they look in real life