Free Tutorial, Icons and Copyrighted Data not a part of Free Content, I have addons that include an explosion pack (reminder I support Peace in Real Life, explosions in special effects for movies)
Used E in Edit Mode to extrude regions
Used Loop cut along with Ctrl-R with mouse wheel to make loop cuts (seems to be a bit buggy at times)
blender.org – Home of the Blender project – Free and Open 3D Creation Software
3D Cylinders may be added with Boolean modifier to add shoelace holes
Tried to keep quads during creation, solidify modifier, shade smooth, and subdivision surface modifier useful in creation
Seems to be a bug when using Exact over Fast option when using Boolean Modifier
Used Shift-D (Duplicate) to Duplicate cylinder in Edit Mode
Never Say Die, you will prevail!
Seems to be some issues when I apply the modifiers, might need to subdivide surface more or change order of modifiers, created some artifacts when I tried