Few tips: 

-at first, pick up two different coloured beads – it's just going to be easier!

-try to use a thread in a similar colour as your 11/0 beads,

-keep your thread pulled tightly,

-it will be a bit wavy in the beginning, but don't worry, it'll fix when connecting.

Cut around 1m of thread, then slip 5 x TOHO 11/0 on a needle

Thread those 5 beads again

Pull your thread to form a circle and tie a knot

Add one 11/0 bead between first added beads.

In the end we're left with something like this :).

Remember to keep your thread tight. Between all outside beads add another 2 x 11/0, just like it's shown on the picture.

Did you get it?

The thread has to come out of the first bead which were added two at a time. Like shown on the picture, as two 11/0 beads. Here is the first arm of our starfish.

Let's add 15/0 bead, between two 11/0. Thread has to come out like on the picture. Here is going to be the second arm.

Again, let's add 2 x 11/0 and 15/0. Repeat until you went all the way around.

Now it should look like this on the picture.

Now we're going to repeat previous steps, with one exception - on “walls”  we're going to add more 15/0 beads.
So, to the first arm we're adding 2 x TOHO 11/0.

Next, between TOHO 11/0 and 15/0 add 1 x 15/0.

Next step is adding 1 x 15/0 between 15/0 and 11/0, so the thread is coming out between the second arm beads. Let's repeat it forming a full circle.

That's how our starfish should look like now :).

Let's go round again – add 2 x 11/0 to the first arm.

Between 11/0 and 15/0 add 1 x 15/0.

Next, add 1 x 15/0 between two 15/0 beads.

To finish our wall, add 1 x 15/0 between 15/0 and 11/0.

Repeat this step five times and you should get this:

In the next round repeat what we've done before – add 2 x 11/0 beads to an arm.

On walls between beads add 15/0. Repeat with every wall.

We don't change anything in the next circle :) on arms add 11/0 beads, on walls 15/0. Our starfish should now look like this picture. 

First part is ready. Since we're making earrings, we're going to need three more of them. Make them just like the first one, repeat all steps.
When we have them all ready, let's connect them. My suggestion is to lay them flat, with middle thread to the top, it's going to make connecting and adding beads easier.

Cut the inside threads (from the middle, not the arm) as close to beads as possible (after connecting your starfish endings are going to be inside anyway). Let's start connecting our two parts. Use a thread that's coming out of one of the arms.
CAREFUL! We add one bead everywhere, even by arms, and pull your thread tightly!
Lace a thread between two parts like on pictures.

Connect three walls like this. When you have them ready, place your 8mm bead inside. This size will be best, but smaller or foil will work as well.

Connect remaining walls like before. It's going to be a bit more difficult now because of the bead as it will try to slip out, it's also going to be a bit hard to pull a thread.

If you have it all connected, repeat it without adding new beads, so the walls are as close to each other as possible. After this round is done, tie threads together, place a knot inside a 11/0 bead and cut remaining thread. Do the same with your other starfish. Choose one arm and connect an ear hook with a jump ring to one 11/0 bead.

Our Summer earrings are now ready!