Another thing to consider when using sketchy styles is that edges that make up curves can often be shorter than the shortest edge stroke. When that happens, the curves tend to disappear as in this example. [image: UUE7_Screenshot-11_13_20199_53_58PM.png] Welding those edges together gets around that problem as shown here: [image: VcPT_Screenshot-11_13_20199_55_01PM.png] The easiest way I've found to do the welding is with Eneroth Auto Weld which welds any edges that can be welded in the selection. TIG's TIG-Weld is also good.

It sounds like the lines arent intersecting with the floor, although i could be wrong. To fix this, select all the lines, right click->intersect->with model. If that doesnt work could you psot a pic of the problem? it can be useful in sorting this sort of thing out