To be more serious, it may cause your invention to be made public, which will affect your application for a patent, or it may be used by others to apply for a patent.
However, I think the chance of this is too small. , there is a huge chance that it will be swept away as garbage.
If you take it seriously, don’t waste time asking questions about it, the right way is to apply for a patent quickly.
Also Yes, put this drawing in your wallet? Take a photo of your girlfriend? Apply for a design?