Process and Procedure

First thing was to measure out my phone's dimensions. I took the measurements with the case on. Though not marked on the sketch, I did add some tolerance so the phone wouldn't get wedged super snugly into the holder.  The low angle was chosen based on how I tend to play.

The sketch had walls which surrounded the phone, but I pared it down and made it so that there were only two main barriers (bottom and top) along with small stubs of walls to prevent the phone from shifting side to side. The original sketch also included a hole in the center of the holder to facilitate removing the phone, but since the walls no longer surrounded the area, I removed it from the design.

After modeling the initial holder, I thought it looked too plain, so I added a musical score to the side. It was also originally basically a solid block of plastic besides the score, which would've been unnecessary, so I cut out a section from the middle to reduce the amount of filament required.

I had set the walls to 3mm, but then I realized that's actually pretty thin, so I doubled the thickness of the bottom walls. The "change parameters" function sure is useful.