Check the invert car Y axis box so it's on, made driving very easy for me.

When driving in mud, make sure your 4 tires are yellow & Padlock on the bottom is on. Pressing N & B enables/disables this.

Trust me, Decorator - Click interior design. Then in the bottom left corner, click in the box under museum design & just click the floor, wall, or ceiling. The one highlighted in yellow shoes your choices for that design.

Woodwork - Practice one of the models after you do the 3.

Lazy bones - Use preparation instead of manual on all 3 boxes after you knock off the rock. Good tip is to have one box prepping then start knocking off rock on the second box. Then click the screen left of the preparation doors.