is the word scribbling an audtiory image?

It depends on the person reading the word scribbling. Some people have a visual response; others have an auditory reaction depending upon their background. I see and hear scribbling because of my activities the the first time I heard the word.

It's more of a visual image. People don't usually 'hear' scribbling when they see the word.

Not a bad poem. The question's fair---and, I suspect, the answer telegraphs how useful the poet might be in the critic's role! I reckon roughly that one in eight of my poems is worth a second reading, and of that lot maybe one in four is worth a third. One day I might write a poem worth a fourth reading, but if I don't, that's okay. I MIGHT be able to nudge those numbers up a bit, if I were willing to spend more time in revision than I do. But I am not so willing; I got only 168 hours in the week, and I got purposes for 200 hours in the week. Somethin's gonna get starved for my time.