All the color bombs you need are already on the board, so any you are able to make is a bonus and you can skip out on some of the harder ones to get to. The second to last column of blocks alternates 5 hit and 4 hit blocks, so you need to get though them as soon as possible. If you can zip 2 horizontal striped candies through the rows with the all the blocks in it, it will make life a whole lot easier.
Patricia Frederick’s Tips for Candy Crush Level 286
Concentrate on one area to release and match 2 color bombs together. Repeat if this doesn’t collect them all at once.