Cone #020 is not so very difficult, but rather time consuming to make. A pair of tweezers is a good help.
Cone #020 is made from 5 pieces of paper. I used four colours for the hearts and gold for the spacing strips in both directions. Cut out all the pieces and line up and glue together as indicated on the photos. If you use paper with colour only on one side, then remember you work from the front. What you see is the outside of the cone. The process goes like this: 1) place part 1 flat on the table. 2) fix the two remaining heart arms. 3) fix the four spacing strips. 4) line up part three swirling in the other direction and find out where the missing two heart arms should go. Remove part three. 5) fix the two heart arms. 6) fix the four spacing strips. 7) finish with fixing part three.
Now you may start weaving. First weave the smallest row of hearts near the base. Look at the picture to see which colours should show at the point. It must not be the colour of the base. The spacing strips shall only be woven when they meet a strip behind the centre of a heart blade, otherwise they must show. Then weave as many of the hearts possible while the cone is still flat.
Form the cone, fix with glue and weave the rest. When you weave the last and largest hearts you may notice that one set of spacing strips are woven almost like the heart strip next to it. Thus they tend to overlap. You can fix this by easing the rule on how to weave the spacing strips. Weave the spacing strip next the largest heart in the normal one up, one down way, but for the three strip crossings next to the largest hearts only. That will force all the strips into the proper distance.
You do not need to use paperclips for weaving. But lining up is easier if you use paper clips on top holding the large heart blades together. Line up starting from the heart blades of the biggest hearts and then line up the other strips from above.
Fixing with glue is quite a job. Start fixing the two layers of the largest heart blades. Make sure they fit as precisely as possible. Then fix the loose ends of the heart strips on front and back. Next fix the largest heart blades to the spacing strips. And last fix also all the small heart blades to the cone. I find it prettier that way. Add a handle.