I started to glue the model before I paint it like they said.....

I started to glue the model before I paint it like they said and this happen. About two hours ago. I saw one piece was not on I tried to pull it apart my finger nail broke and the lance broke off. Screw the way they told me to paint it. I have read off some forums some people painted like I do. I found a way to stop the paint from getting on the joints by reading the forum.