I started mapping in OSM in an effort to ensure cycling infrastructure was being captured with meaningful tagging; however, with time, this has expanded into many sub-topics. I focus heavily on cycling and pedestrian infrastructure, and I try to capture details that help those with various accessibility needs.
Software
Steglitz submits data to OpenStreetMap using JOSM.
Steglitz submits data to OpenStreetMap using Vespucci.
Steglitz submits data to OpenStreetMap using StreetComplete.
I do the majority of my edits and cleanup in JOSM. Aerial imagery is a part of the survey cycle, with large-scale structures being identified first, followed by in-person surveys to capture increasing levels of detail. When I'm out and about, I use Vespucci for adding new features, or updating features that are easy enough to modify on a small touch screen. Vespucci is handy for things like adding point features or splitting roads when, for example, StreetComplete asks me about the surface quality of a road, but the segment is simply too long. After splitting the road, I can redownload the area and carry on with prompts to help me capture features consistently.
Paper Surveys
When time allows, I conduct targeted surveys where I focus on a specific area, feature, or tagging group. This may mean trying to improve a single tag, like road width or building color, or it may focus on adding attributes that help improve 3D rendering, like adding roof shapes, building/roof height, etc.