I think you will be fine but to get an idea of what some of your blocks will look like fold your fabric into the width (probably 3-3/4 to 4") that you will be cutting from. Then if you can find two small mirrors ( about 4-5") and tape them together on one end so that they open up like a book - you can also buy these already taped together and they do come in handy. Then open your mirrors so that they make a 60 degree triangle - or if you have a 60 degree triangle ruler fold them so that they are just around the rulerl, then pull the ruler out. The mirrors will image (although it is not exact it gives you a very good idea) what your block will look like. Move the mirrrors so that the open end is on the bottom of your strip and them on the top (flip flopping) which is how you cut and it will give you a pretty good idea of what things will look like.
These mirrors also com in handy once your block is cut out as you have 3 ways to piece it since all of the sides are the same size (if you are doing the hexagon). You can move the cut out piece each time showing one of the tips in the corner and see how you would best like it do go together. Clear as mud - sorry I don't know how else to explain it.