This is a very helpful video for the novice to a carb rebuild on one of these bikes:
Once you have rebuilt correctly and secured the carb body to the bike, confirm that fuel is flowing out of the tap, and then turn to the spark plug.
To test for spark, plug a new(ish) plug into the lead, switch on the ignition, and crank the bike with the end of the plug grounded to the frame. (No need to turn on the fuel for this.) You should see a fat blue spark. If you see no spark, and you have a known good plug, you have an ignition fault.
If you do see a spark, and you still get nothing after reconnecting your lead to the plug in the cylinder, there are a few possibilities: (1) poor compression (unlikely, but not impossible); (2) your fuel mixture is jacked (unlikely if you rebuilt correctly and set the screws to the correct baselines); (3) your timing is way, way off (unlikely if it was running normally before and you have not messed with the stator position).
My guess is that it should fire up with the carb rebuilt correctly and the choke out a LITTLE bit (do not crack the throttle when you kick). Possible that you have a fouled plug -- in which case you just need to replace that. Keep us posted!