Make sure you move your foot completely off the clutch after the gear is engage.
are you able to do the following?
1) Get the car rolling moving slowly
2) Remove your foot from the clutch pedal, move it perhaps to the rest area
3) Floor it
4) at around 5500k rpm as fast as you can press the clutch down, put into 2nd and release the clutch and floor it
very very important when you are cruising you should move your left foot to the rest area and never keep your foot hovering over the clutch pedal as you may press it unintentionally causing premature wear
practice that and it will start to come to you naturally