A Bridge Scorecard I can reuse, that can be discussed to the right

I am interested in duplicating the standard bridge scorecard for inclusion in a book, the discussion will refer to the scorecard (possibly with highlighting parts of it). I expect the scorecard to be perhaps half the width of the page perhaps?

usepackage[]{tabularx}
usepackage{booktabs}
begin{document}
begin{tabularx}{textwidth}{l c c c}
  multicolumn{4}{c}{colorbox{black}{color{white}Scoring for Bridge}} 
  VALUE PER TRICK &  Not doubled & Doubled & Redoubled 
  midrule
  IF TRUMP IS:& & & 
  Clubs or Diamonds (clubs, diamonds) & 20 & 40 & 80 
  Hearts or Spades (hearts, spades) & 30 & 60 & 120
  NO TRUMP CONTRACT:& & & 
  1st trick over 6 & 40 & 80 & 160 
  Each additional trick over 6 & 30 & 60 & 120 
  multicolumn{4}{c}{Game is 100 Points} 
  multicolumn{4}{c}{textit{First side to win 100 points below line, in one or more hands, wins a game}} 
  multicolumn{4}{c}{textit{When a side wins two games, a rubber is concluded.}} 
  midrule
  multicolumn{4}{c}{textbf{PREMIUM SCORE}} 
  midrule
end{tabularx} 
begin{tabularx}{textwidth}{l r r r r r r}
  & multicolumn{3}{c}{NOT VULNERABLE} & multicolumn{3}{c}{VULNERABLE}
  & Not Dbld. & Dbld. & Redbld. & Not Dbld. & Dbld. & Redbld. 
  midrule
  Each overtrick & Trick Value & 100 & 200 & Trick Value & 200 & 400 
  multicolumn{7}{l}{textit{(Tricks made in excess of contract)}} 
  midrule
  Small Slam (12 tricks) & 500 & 500 & 500 & 750 & 750 & 750
  Grand Slam (13 tricks) & 1000 & 1000 & 1000 & 1500 & 1500 & 1500
  midrule
  multicolumn{7}{l}{Two-Game Rubberdotfill 700} 
  multicolumn{7}{l}{Three-Game Rubberdotfill 500} 
  multicolumn{7}{l}{Unfinished Rubber, One Gamedotfill 300} 
  multicolumn{7}{l}{Unfinished Game, Part Scoredotfill 100} 
  midrule
  multicolumn{7}{l}{Bonus for fufilling any doubled contractdotfill 50} 
  multicolumn{7}{l}{Bonus for fulfilling any redoubled contractdotfill 100} 
  midrule
  multicolumn{7}{l}{Honours (Scored above the line by either side)} 
  multicolumn{7}{l}{Four of the five trump Honours (A, K, Q, J, 10) in one handdotfill 100} 
  multicolumn{7}{l}{All five trump Honours (A, K, Q, J, 10) in one handdotfill 150} 
  multicolumn{7}{l}{All four Aces in one hand at notrump contractdotfill 150} 
  midrule
  multicolumn{7}{c}{textbf{UNDERTRICK PENALTIES}} 
  midrule
  multicolumn{4}{l}{textbf{NOT VULNERABLE}} & Not Doubled & Doubled & Redoubled 
  midrule
  multicolumn{5}{l}{Onedotfill 50} & 100 & 200
  multicolumn{5}{l}{Twodotfill 100} & 300 & 600
  multicolumn{5}{l}{Threedotfill 150} & 500 & 1000
  multicolumn{4}{l}{For each additional undertrick} & Add 50 &  Add 300 & Add 600
  midrule
  multicolumn{7}{l}{textbf{VULNERABLE}} 
  multicolumn{5}{l}{Onedotfill 100} & 200 & 400
  multicolumn{5}{l}{Twodotfill 200} & 500 & 1000
  multicolumn{5}{l}{Threedotfill 300} & 800 & 1600
  multicolumn{4}{l}{For each additional undertrick} & Add 100 &  Add 300 & Add 600
  midrule
end{tabularx}
textit{Doubling and/or redoubling do not affect honour, slam or rubber points.}
textit{Vulnerability does not affect honour points or bonus points.}
textit{The side making the most points at the conclusion of the rubber (regardless of games) is the actual winner of the rubber.}

which yields the following results with my other preamble.

My target is this

This is closeish – I would like to be able control its size a bit better? Perhaps putting it in minipage?

My LaTeX is not very strong so I am looking for strategies that would help? Are tables the right way to go? I would like the whole thing to be shrunk to about half the size and hopefully draw boxes or callouts to be able to refer to parts it.

Are nested tables a good idea?

Also I am not sure why the two tables are not aligned.

I hope I have provided enough detail and am asking the right questions here?