Just becouse your shallow does NOT mean your not going to get hurt. That first/last ATA is the fastest expanding. Thats 33 feet/10meters. Sounds like it might be worth reading through your manual again.
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Laser:This is something that comes with practice.
Once you have buoyancy control you'll see that a mere big breathe and pulling your head up ( assuming you are in good trim ) a bit will SLOWLY start you ascending. Then you need to pay attention to the gas in the BC and vent it appropriately to maintain a smooth SLOW ascent.
This should be covered in basic class damn it.