I think a walking foot is essential... I use one whenever I'm sewing more than 2 layers...basically when sewing binding on and finishing the binding by hand. There is such a big difference in the quality.
Save some money some how (skip a few desserts or pop, keep car trips to a bare minimum for a month) and buy a walking foot. Your 'little Brother sewing machine' maybe basic enough that it could adapt well to a basic walking foot. I understand some of the higher priced machines require a walking foot that's pretty expensive though.
I think Walmart sells them...or at least they use to. When you get your money saved, buy one there, try it and see if you like/can tell the difference. If you cannot, return it.
Good luck
Nan