If copying, use checkered manuscript paper. This will make it easier for editors to proofread the text.

A red check with a black pen,

Blue and black are recommended for the green grid.

Pure blue is recommended for purple or blue squares.

This will be more harmonious and beautiful.

Generally speaking, manuscript paper has only these colors.

In view of my own contribution experience, I strongly recommend using plaid manuscript paper, and remember to indicate the number of words when printing. On the whole, everything is all right. But I think you'd better use checkered paper. On the one hand, it looks clear, on the other hand, it looks better. I think you'd better write with a black pen, because the blue one looks impetuous ... this is just my own opinion. I wish you the first prize! O(∩_∩)o ... Good luck! !