In my opinion, this is not a problem. Tinkering with small things is tough but it is the way to go. This tells that you care not only about the big functionalit

In my opinion, this is not a problem. Tinkering with small things is tough but it is the way to go. This tells that you care not only about the big functionality but also small nitty-gritty stuff that makes big difference at the end. One suggestion that I can give is to give undivided focus to any particular task (say icons) and not worry about time until you get it right. Mind you, you may revisit and change it again. In case of a doubt, push it to A/B testing. So, keep calm and carry on :)