Hi, and welcome to OpenStreetMap! Since you requested a review, I looked over your recent changesets. Looks great, nice job! The only suggestion I have is to not go too crazy on the "smoothing". If there are a really excessive amount of nodes along a way, it makes it slightly harder for later mappers to edit things if they end up changing.

How many is too many? The opinions vary quite a bit. In my opinion, we should use "as few as possible, but as many as necessary." But I'm sure you'll get a feel for what's best and develop your own opinion. :)

Let me know if you have any questions, and thanks for your contributions!