Hi @SabrinaM - I remember this level well, it was so hard!! Below are my tips.

Try not to remove any of the butterfly colored blocks until you get down to the bottom of the game. (The 'help from friends' balloons will not help if you've been given any, they just make it harder!)

Also, if all your butterflies are not the same color it can be easier to let the wrong color blow up and another will drop hopefully the same color as the rest, then you only have to collect it.

You can see I do this in both examples in the video @Lady_Choo posted above.

Good luck!