I have not surveyed the vector graphics drawing tools lately but one can hope that the options must be better. Just google "vector graphics editor" and then just run though the loop of download and disappointment until you find something usable. Personally I have no problem paying a moderate fee for something better than usable. The free option I've used in the past was Inkscape. It's a little touchy and it was borderline abandon-ware last I checked but it could be made to work with a lot of fiddling. I have posted some detailed descriptions here long ago about how I did panels using Inkscape. There key is to keep the arcs of characters and such from being converted to splined. If you can't find something better than Inkscape, maybe try to find my old posts and just use that.