I do the infill by painting "within the lines" as carefully as I can, then wiping away the excess with a paper towel or q-tip dampened with paint thinner or mineral spirits.

I just finished working on it and took it for a short ride yesterday. It rides very nice. It is a bit small for me but has a long steerer tube with a large spacer so the bars are higher than they normally would be which helps with my bad back. It probably won't get ridden too much but I should be able to get out on it at least a few times a year. I need to seriously get on selling some bikes next spring as I have too many to ride even a few times a year right now.