Neatly!
Sorry to be so glib, but you should present documents in a logical order - chronological is usually good. Or if the witness statement refers to the supporting documents, put those documents behind the statement. If you have a lot you can ring bind them and number the pages, or put numbered dividers between them with an index at the front.
The point of this is when you say your stuff, if you say "the e mail of 14th Jan confirmed the price" and "the e mail of 28 Feb confirmed the work had arrived and the client was ok with the quality", Judge will be able to find the e mails of 14th Jan and 28 Feb relatively quickly.
Solicitors would bring 3 copies: one for them, one for the judge and one for the other side. If you can afford to do this it will help you look professional and business like.
You need to be clear and dispassionate. Leave your emotions about how you have been treated outside the court and concentrate on the facts.
If you are plaintiff you should say your piece first, the client gets to reply and then you can say something to sum up, I think, although this is rather determined by the judge and the conduct of the parties. There is certainly no need to respond to every single comment by leaping up and shouting "Objection your honour!". Make notes of points you would like to rebut and wait your turn. Sometimes it is enough to state that you disagree with X's account of a telephone conversation - there is no need to go on to say that X has always been a lying swine and untrustworthy. The judge's role is to decide which of you has remembered the conversation better, and whether X is a fibber with his fingers crossed behind his back. If you manage not to stoop to X's level it is more likely the judge will prefer your account.
I have not been in the small claims court since I was a trainee solicitor about 15 years ago, but I do not think they will have changed much.