First things first, I've noticed that there are two basic types of aprons in paintings and the like. The first representation is of the waist variety. They tie at the waist and are fairly plain. Perhaps some pleats along the upper edge, but that's about it.
This one is simple with easy lines and shouldn't be that hard to make, but I'm weird and want to make one more like these second examples. Not to say it'll be that much more difficult, but it has a front and a back, interestingly enough. [Didn't realize until later that this next one has both aprons in it. Attention to detail!]
I've seen both representations in more than one painting, but the second I have seen more often. I'm not sure why, but the second is more distinctive. I'll likely make both as an exercise, but I'll prefer the second.