Re-word like so (barring the possibility of digitalandanalog's choice):
1 ) There shall be no law preferring an establishment of any particular religion, or prohibiting the free exercise thereof; or restriction of any word whether written, spoken, read, heard, or thought; or the right of the people peaceably to assemble and to petition the Government for a redress of grievances.
2 ) Well-maintained armed forces being necessary to the security of a free people, the right of the individual citizen to keep and bear arms shall not be violated in any manner.
3 ) No soldier shall, neither in time of peace nor in time of war, be quartered in any house without the consent of the Owner, except in a manner to be prescribed by law.
4 ) The right of the people to be secure in their persons, houses, papers, and effects against unreasonable searches and seizures shall not be violated. No Warrants shall issue except upon probable cause supported by Oath or affirmation, particularly describing the place to be searched, and the persons or things to be seized.
5 ) No person shall be held to answer for a capital crime unless on presentment or indictment of a Grand Jury, except in cases arising in military forces, or in the organized Militia, when in actual service in time of War or public danger. No person shall be subject for the same offense to be twice put in jeopardy of life or limb. No person shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law. No private property shall be taken for public use without just compensation.
6 ) The accused shall have a speedy and public trial in all criminal prosecutions by an impartial jury of the State and district where in the crime shall have been committed, which district shall have been previously ascertained by law, and to be informed of the nature and cause of the accusation; to be confronted with the witnesses against him; to have compulsory process for obtaining witnesses in his favor, and to have the Assistance of Counsel for his defense.
7 ) In suits at common law, the right of trial by jury shall be preserved. No fact tried by a jury shall be otherwise re-examined in any Court of the United States than according to the rules of the common law.
8 ) Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted.
9 ) The mention of certain rights in the Constitution shall not be construed to deny or disparage any others retained by the people.
10 ) The powers not delegated to the United States Federal Government by the Constitution, nor prohibited by it to the States, are reserved to the States or the people, respectively. Each state retains its sovereignty, freedom, and independence. Each state retains every power, jurisdiction, and right. (took the last part more or less directly from the Articles of Confederation)
For the most part, modern punctuation use is all I would change, and add clarification on key points.
Edit:Add in a working knowledge of history so they'll know why the FFs wrote it as they did.
Isn't that already there, AKA the Declaration of Independence?