Response by: wowcow, November 9th 2013 12:30:03 pm
The simple answer is that you can make it either way depending on your personal preference. Personally I would prefer to make it as a one piece suit (catsuit), but making a leotard and separate tights would be acceptable as well.
As a beginner making a leotard and separate tights would be much easier then making a catsuit. As far as the tights showing through the leotard it would depend a lot on the colors and thickness of the latex used. One advantage to making two separate pieces is that you can make multiples of each in different colors and mix and match different colors on different days.
I would suggest checking out the Pattern School website, it is archived at http://web.archive.org/web/20130510014326/http://www.patternschool.com/ With the information on that website you can make a good fitting garments. It is where I learned to make the patterns for my latex clothes.