Key Signatures, Chords and Tempo Markings for a Composition

[chopinlover23]

I need help or advice, I wanna compose a few Piano pieces by me, I only ''doodle on the piano'' with some short pieces, but this time I wanna compose something long and very mature that suits my age (13). I wanna compose the following pieces with the following moods
*Night
*Tomorrow
*Love
*March with a Jazz Element
*Relaxing
*Hope

Please suggest Chord Progressions. Key Signatures and Tempo Markings

THANKS

[Bob]

I'd suggest some kind of variation I IV V I or I ii V I.

[musicluvr49]

Hi chopinlover23,

I think that things like chord progression and tempo markings should be left to the discretion of the composer. Maybe after you actually compose the music, or at least come up with the basic idea, then people can help you out.
Sorry if this isn't what you wanted...

[quantum]

Don't set your self up too strictly to follow key, time, or tempo.  These are only technical / theoretical devices used to organize and describe music.  Music does not have to follow any such constraints.  You say you doodle on the piano.  Don't dismiss this activity as lower level of thinking about music.  It can be very useful for composition.  Doodle as much as you like.  When you come across an idea you like while doodling, make note of it.  You may wish to jot it down in a composers sketchbook, or set a recorder to record your idea while you play it. 

You've set yourself a list of ideas you want to compose to.  Try thinking of a musical expression that evokes or reminisces of that idea.  There is no right or wrong answer to this, just get your compositional flow moving.  It may consist of some previous ideas you came up with doodling. 

For a longer piece, you may want to think of form.  Gather a set of sub-ideas that can contribute to the overall idea.