Sandbags need to be accessorized with... oh, an M60 or an M1921 .30 cal, an M2 .50 cal looking suspiciously like overkill in the direction of world domination or something.
Honestly, I'd put myself about a 1.9 to a rusty 2.2 tops, after doing some framing construction and drywall once upon a time. I do the monkey jobs under the car hood -- hose out, hose in, change and gap plugs -- that level.
For baseboard molding, get yourself a miter saw and its proper box. This special tool is designed to give accurate bevel cuts to fit molding into corners in a craftsmanlike way. It is very easy to use.