Inscribing a painting is generally to indicate the identity of the creator of the painting, as well as the time and place of creation. If you draw lotus pods and crabs, you can sign like this:
1. **Creator**: You can write your name or pen name in the corner of the painting. For example, "Xiao Li's painting" or "Xiao Li's system".
2. **Time**: Next to the name, you can mark the time when the painting was created. For example, "Xia Yue in the year Dingyou" means that it was created in the summer of the year Dingyou.
3. **Place**: If the painting was created in a particular place, you can also include that location. For example, "by the West Lake" means that the painting was created by the West Lake.
If your name or pen name, time and place are too long or complex, you can also abbreviate them. For example, "Xiao Li spent the summer months in the Wuxu year at the West Lake" is also understandable and acceptable.
It should be noted that the style and content of the signature can be adjusted according to your personal preferences and the style of the painting. The above is just a basic example. If your painting style is very simple, you may choose a more simple font and signature. If your style is modern, you might choose a more modern font and signature.