Yes, there are some limitations making 'homemade boards' the way I do it. Board factories (naturally) can make make smaller tracks etc. I actually convert the Gerber to a .png then import that into Corel Draw - that allows me to tidy a few things up a lot faster for a 'one off'. That also makes it dead easy to add images like the Homepin logo etc.
Naturally there are dozens of ways to do a one off board - none of the them are the "right way" but I have found this method to be the fastest way with the best 'bang for buck' result.
So that's your little trick.
So would you like me to thicken up the rest of the thin tracks?