Rich has a good point. Trying it out before always helps - especially to make yourself familiar with the recovery procedure which is usually not well documented.
I use a little 2GB test partition for that. You can shrink that off any large partition. Put some odd data in and image it. Then delete some data from the test partition and restore it from the image. If your deleted data is back, you know that it works.
Using a small 2GB partition has the advantage that the whole procedure will be very fast. Using free Macrium, the imaging step takes only 4 seconds.