The problem with moving your hand from it's normal position towards the stem is that it amplifies the effect any movement your hand makes. So whilst a small correction whilst in the normal rding position is usually enough, it may be too much, resulting in overcorrection, if your hand is closer to the stem. I see it a lot when teaching people to ride.I had a bit of a problem with this years ago, i found holding the handlebars about 3/4 way out on the horizontal gives me a more stable up right position rather trying to do it from holding far down or wide (Lets face it your doing it to be seen). Porp yourself up a bit and relax when glancing over your sholder or putting your arm out. It doesnt have to be a full extension or wave or above your head, just what your comfortable with and it will just click.
Practice like everyone said above but make sure you practice both arms!...
...(try to get into a habit of lifting your chin just before you need to signal)....
You're very welcome...now just practise, practise, practise.This worked perfectly for me this morning, my left hand signals are hugely improved! Thank you!
Excellent, FC, congrats on getting comfortable with the clipless and moving the hands up, if only because your instructor seems to be following some excellent advice...I also tried indicating. And I'm comfortable now getting my left hand straight across now. YAY! He told me to just cycle and keep putting my hand up off the bar a few times, then higher up a few times, and then out a few times etc... seems to have worked.
... then try and lift your left hand an inch off the bars and repeat the shapes until your feel more confident, then with the right hand an inch above the bars and repeat, and gradually move your hand further away until you can get your arm out completely.