It's much simpler to learn how to draw a fuchsia than you think. It's question of looking carefully, blocking out your geometric guidelines to keep you where you are supposed to be going, and noting a few specific details about the flower.
After having copied a few, you will know how to draw a fuchsia well enough to be able to draw one from memory, whenever you want. Let's begin.
Now we understand how the fuchsia is put together, let's start to draw.
Start by taking a pencil and lightly trace the curve of the plant's horizontal stem (I'm drawing these lines heavily so you can see them); trace the drooping stems from where the pairs of leaves sprout, and trace the geometric forms of the cones and rectangles you will need to fit the more complicated shapes of the flowers and buds in. These guidelines will keep everything in proportion.
Now go back and draw heavier lines to put in the leaves, in pairs as we have seen. Draw the drooping stems.
Now you can start to draw in the shapes of the flowers. Begin by drawing "parentheses" on the drooping stems for where it is "pinched in". Then draw the slightly flaring straight lines to place the basic shapes of the blossoms and the long "parentheses" lines for the buds.
Now you can add the petals, pistil and stamens. You may find it easier to draw in the petals if you draw a line down the middle of the flower and use that middle point to draw them out from. Finish the pointed tips of the buds.
Last, you can shade the flower to help define its shape; and you can use colored pencils to give the bloom its characteristic brilliant hues. Here I used Faber-Castell watercolor pencils.
Give it a try - take your time you'll see you probably now understand how to draw a fuchsia very well!