simple
1. put the ball back in your stance. off the back foot.
2. lean some weight onto your left side. keep it there.
3. grip down sightly and move your hands also to the left. have you hands in line with your left thigh.
4. swing back and make a slightly decending blow into the ball. DO NOT SCOOP ! keep your hands ahead of the club head.
if you do this and hold the grip tight then you will hit a nice clip of a chip shot. alot of people talk about soft hands. i am practising this shot over 100 times every day at the minute. this is the best way to do it imo.
http://www.youtube.com/watch?v=48PlO1NUvUs&feature=related
this is something similar to jim here. i have my hands slightly further forward than jim also the ball slightly further back.
try it now if you can weight on the left side is the most important part then decending blow!
Hello Kevin and welcome
By chipping I assume you mean short shots from around the green.
Use your putting stance/stroke/grip with a 5 iron until you feel comfortable and accurate then just work your way down the clubs.
I tend to use an 8 iron where I can, try to avoid using anything higher than a 9 iron.
Sounds good to me.
As for putting a pane of glass in front of you for learning under pressure. As a youngster I used to pitch from the back garden to the front and back again, over the bungalow we lived in. You learn to concentrate very quickly... but being older and wiser I wouldn't want to see my kids doing it.