dread help

had dreads put in last night, look a bit silly at the moment. my main problem is that they bacame very untangled in my sleep  and i had to re-backcomb alot of them in the morning. to avoid this should i put elastic bands at the tips as well as the routes of my hair?

plus they are all standing up pointing staright at the sky making my look like a pinapple, will this go awya after a few weeks?

the person who did them for me said i should back comb them everyday, is this a good idea or should i just leave them to settle in?