Be careful using rubbing alcohol, as it usually contains skin conditioning ingredients such as lanolin and aloe, which can leave an undesired residue behind. Much better to use 91% (the maximum purity possible with distillation) isopropanol as it will evaporate much more cleanly (pharmacies have it). You can also use commercially available flux remover sprays (Techspray is my preference); they are a bit more expensive but they are anhydrous, do a more thorough job, and evaporate more quickly.

Your solder connections look perfectly fine, BTW.

For future reference, the best way to fix a solder bridge is to use desoldering braid or a solder sucker. Also note that it's much easier to get a solder bridge between two adjacent pads connected by a trace than two pads which are insulated from each other. You might also consider using thinner gauge solder wire; 0.028-0.035" is probably optimal for typical pinball PCBs (my "go to" solder for nearly all through-hole PCB work is Kester #285 0.031" 63/37 - been using it a very long time, wets and flows easily and quickly, has a mildly-activated flux which is less aggressive and doesn't actually require cleaning, and I have never experienced a joint failure).