To be honest you did not ask the right question here. To answer you on what you asked, yes a clear cup is fine, a dome is a good thing to have in my opinion, some people don't use one, and yes a 200w cfl is esential. but.....
I can't be sure you did everything else. To clone successfully, you need to do as much right as possible and the more right things you do the better your chanses.
1) Make sure the cutting was taken from the right spot, you cut inbetween nodes at a 45 degree angle with a very sharp something, I use a medical scalpel. yea
2) remove the excess leaves and leave enough at the top leaf wise.
3) put the cutting IMEDIATLY in either a rooting poweder or rooting solution. This is prob the most important aspect of it all. Remember not all rooting stuff is the same, it took me a while to get a good one.
4) after you have dipped it in the rooting solution you need to put it in your growing medium in a cup or whatever you use. I use jiffy cubes for example.
5) then you place, as you did, the cup or jiffy cube on the heating pod. VERY IMPORTANT - is you heating pad under a tile ??? You need a tile to disperse the heat, also if it is hot round your parts, do not use the heating pad, to hot is also bad, i learned the hard way.
6) cover with the dome
7) Very important, spray the clone with fresh water twice a day, no need to water untill you know it has rooted, just spray it.
last tip, make sure you have at least 6 hours of darkness, plants root better if they have a dark period.
Hope this helps. my fingers hurt. lol