Don't be paranoid.. ez for me to say.. right. My first brew was a Coopers and I was quite disappointed. Needless to say, there are some here in HBT that have turned the Coopers kits into something that sounds like very good brew.
But, back to your first comment. The answer is "patience grasshopper"
I left my first Coops in the fermenter for four weeks.. not the 1 that the instructions suggested. The I bottled and let the brew condition for 3 weeks before opening the first bottle. The carbonation was very good.. but the beer was very thin and poor mouthfeel. I didn't care for it at all. I finally finished drinking it. Should have used it to make beer bread..
Be patient and check out some of the recipes on the Coopers site in Australia. They always add more LME or DME. Also, Unionrdr has some recipes he's developed in his page here.
Good luck and don't let this batch discourage you. Hopefully, it will turn out better than mine. I've now started doing extract with specialty grains and have MUCH better results.