How shall we help you? Just practice a bit and avoid the explosions... It is not really harder than level 40.
Or are you talking about 45 (which is your best level)? It is truly a little bit trickier.
There are two things you can do:
1) when you enter the level on the left side, throw a bomb and go into the corner below the top-left lemon. You can jump up to it (when it is not directly above you, of course) and place a bomb there. Usually it will kill the top right lemon too.
2) Go down to the teleporter at the bottom early. So you can reach the effect item (which can be helpful) and hit a few lemons through this teleporter.
After you did those two steps, it is not that difficult. Only remember that you shouldn't jump through the top teleporter
