I left those blank. A release of a puff of air as the sound is produced. Try holding your hand to your mouth and saying pin and spin. Rounding the lips to produce the sound. Try saying table and twin.
Vowels are harder to classify because they're more continuous.
The two dimensions used both involve tongue position. Some phonetic symbols couldn't be drawn here. I left those blank. As you say the sounds down a column, you should feel your tongue come down. As you say the sounds across a row, you should feel the rise in your tongue go from front to back.