Dunque un piccolo esempio di come predisporre html
----------- html ---------------
<form name="primo" action="page.php" method="post" enctype="multipart/form-data>
<input type="file" name="immagine" >
nome <input type="text" name="nome" >
email <input type="text" name="email" >
<input type="submit" name="invio_form1" value="invio" >
</form>
<form name="secondo" action="page.php" method="post" >
<input type="hidden" name="nome" value="<?php=$_POST["nome"]?>">
<input type="hidden" name="email" value="<?php=$_POST["email"]?>">
<textarea name="note" ></textarea>
valido <input type="checkbox" name="valido" value="si" >
<input type="submit" name="invio_form2" value="invio" >
</form>
-------------------- fine html --------------------------