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ninJAS My keyboard's still pretty temperamental with clan chat right now, so I'll just leave this here for you.
Here's a cool site with some great base layouts for every Town Hall level, I stuck with them up until like TH7 before trying some different things out for myself, and they're all extremely solid. I'd recommend sticking to the 'Hybrid' bases on there, too. A patch a little while ago changed how Shields activate - before then, leaving your Town Hall outside your walls was an actual strategy, not so much right now.
Little note for your current layout, don't worry too much about protecting Elixir Collectors and Gold Mines, if you collect your resources even semi-often there should never be anything in there to actually be stolen. It's much more important to protect your Town Hall, resource storage, and defences with walls. (;