The picture below shows a detail of cutting your canary's toenails - as long as they are fine-tipped enough to be accurate, you can use any size of scissors or clippers - I use these larger ones because the extra-fine tip allows for better accuracy, while the size makes for easy handling.

You should be working in a strong light, so that you can make sure that you can see where the end of the quick inside the nail is before you cut - if you snip this, you will have to deal with blood! Keep a small cup of plain white flour nearby when cutting nails - should you accidentally cut too far down the nail, use this and a little pressure to stop the bleeding and encourage clotting.

I don't like to use styptic pencil to stop bleeding - it stings, and the birds protest and wriggle...

Most canaries are quite calm throughout the nail-clipping process, if held correctly - they can breathe easily, and can grasp one of your fingers with one foot, while you are working on the other, one toe at a time.

I call this fine fellow Major Minor - he is named for the way he sings.