Don't worry, it's not as hard as you may think! :)
Mix some white glue with very little water in a pot, just to make it more fluid.
Once you have these 2 things ready, blow up a balloon: this will be the base of your lamp so make it as big as you want, but remember that your lamp will get bigger after you've added pieces of plastic bag around it.
Start gluing your pieces of newspaper on the balloon with the glue you prepared: spread some glue on the balloon, lay your piece of paper on the glue and add some more glue on it. Continue this way until your cover the whole surface of your balloon, one piece after the other.
Once you're done, do at least another two layers to make it hard enough, and let it dry for at least a night.
Cut 10x44cm (3.93 x 17.32 inches) strips out of the bag. Don't worry about the longest side, it can be a little smaller or bigger than 44cm, the result will be perfect anyway.
I can't tell the exact number of strips you will need because it all depends on how big your balloon is, but I can tell you that you will need MANY so make sure to have more than one plastic bag.
Hint: your lamp will result much better and softer if you use a very thin plastic bag.
Now turn your piece of plastic upside down and fold the same side again. (Take a look at the pictures)
Keep doing this until you reach the opposite side. It's just like making a fan!
Press it a little then open it.
Fold it in half but be careful and delicate, don't press it now.
Close one of the longest sides with your fingers and secure with a stapler or adhesive tape. This way you will obtain something like a "double fan" as you can see in the pictures.
Do the same for all your strips.
Now that you have your hard base, cut about 2/3 of it (maybe a little less) and throw the remaining part away.
Don't worry if the center is not really accurate, you will barely notice it later.
To do this, trace some lines around the base as you can see in the pictures, making them about 2 or 3mm thick (0.09 inches) then cut them.
Don't worry about being accurate because they will be hidden by the plastic.
Take one piece of plastic, bend the end (the part that you closed with the stapler) and stick it to the bottom of the base, using a small piece of double-sided tape.
Continue this way with other pieces of plastic, sticking them one next to the other until you cover the whole bottom. Proceed this way covering the rest of the base.
Remember not to cover the cuts your made previously with tape. Use them as guiding lines.
It took me a whole afternoon to do it but I can't express the satisfaction I felt looking at the result! I am very proud of it.
I recommend using LEDs or at least an energy saving bulb because regular light bulbs get too hot and might burn the lamp. Remember that it's made with paper and plastic so be careful! If you use LEDs there won't be any problem.
What do you think?? :)