Is this a good paragraph? And do you think it flows well? Please someone answer...

Butterflies are such a beautiful insect. And to watch them go though their stages is even more beautiful. I have never seen it myself, but I've heard it is so cool. Well they are caterpillars before their butterflies. Caterpillars eat a lot before they start to build their cocoon around themselves. After they are full grown and stops eating the caterpillar becomes a pupa. The pupa of butterflies is also called a chrysalis. Depending on the species, the pupa may suspended under a branch, hidden in leaves or buried underground. They start to build a cocoon covering their entire body. A cocoon is made from silk. This stage is called the pupal stage. The next stage is called The Reproductive Stage. This stage is where the butterfly comes out of their hibernation as a full grown adult. Most adult butterflies live only one or two weeks, but some species hibernate during the winter and may live several months.

4 answers

Are you supposed to be telling a story? Or writing up something for science class, explaining a process? Or what?
Just writing a paragraph about butterflies for my English class..
The first thing I see is a fragment. Go through the entire paragraph, sentence by sentence, from the bottom to the top, and make sure all are complete sentences -- no fragments, no run-ons.

Then repost.
I will fix all the problems I see, and put them in all capital letters so you can tell what I changed:

Butterflies are such beautiful insectS. And to watch them go though their stages is even more beautiful. I have never seen it myself, but I've heard it is cool. BEFORE BUTTERFLIES BECOME FULLY GROWN, they are FIRST caterpillars. Caterpillars eat a lot before they start to build their cocoon around themselves. After they are fully grown and stop eating, the caterpillar becomes a pupa. The pupa of butterflies is also called a chrysalis. Depending on the species, the pupa may suspended under a branch, hidden in leaves, or buried underground. They start to build a cocoon covering their entire body. A cocoon is made from silk. This stage is called the pupal stage. The next stage is called The Reproductive Stage. This stage is where the butterfly comes out of their hibernation as a full grown adult. Most adult butterflies live only one or two weeks, but some species hibernate during the winter and may live several months.