You'll need the fallowing insulation from, paper, (apage from a copy wi'll do) some light cardboard a couple of nids parts, pva glue, painters mate & something to base it on.
Start by cutting a piece of form 100mmx50mmx50mm then shape it into a cone like shape.
5mm each side of the line at the top & 10mm each side of the line at the bottom.
next measure up 15mm 17mm draw two lines across the piece of card, then measure up 13mm & 15mm from the 17mm line & draw to more lines across the card.
Keep doing this reducing by 2mm each time until you get to nine then reduce by 1mm.
When the paper is dry on the form cone you'll need to cut a couple of mm off the top & cut the bottom at a slight angle leaving it longer on what will be the backside.
Now give it a light covering of pva gule & stick it to it's base & leave it to dry, when dry cut the two hooked parts off the nid piece below & cut a few horn pieces of spape arms & glue them to the lower plates on the back of the tower & glue a few of the horn pieces to the front.