I have been playing for about 6 months, and while that's a short amount of time, I've been told that my playing is coming along pretty well. My question is about embouchure. I've noticed that I use more upper lip than most other players. I seem to get the best tone when I use about 2/3 Upper 1/3 Lower lip. It might even be a tad higher up than that. Is this a bad thing? I've searched the forums for this question, but mostly what I found was about too much lower lip instead. One of my friends said I have a "french horn" embouchure. I feel like my range may be suffering a little bit, but I'm going for a dark tone, which seems to be coming along fine.
If I were to completely center my embouchure (which is what everyone says is ideal) how do I go about adjusting?
My embouchure is very centered horizontally, I'm asking only about vertical placement.
Any comments or suggestions???

On a separate note, that sounds like the opposite of a "French-horn embouchure" - most of the horn players seem to have more on the lower lip.

I would not worry about what percentage goes on what lip, so long as you are consistent. Definitely do not change without the help of a professional player or teacher. 2/3 upper lip is fairly common. If you were something like 90% upper lip, that might be an issue, but I really wouldn't worry about

Check out the following thread: http://www.trumpetmaster.com/vb/f131...ion-34991.html (Embrochure postion)
My concern is what you mean by "dark." One person's "dark" is another person's "dull." Is your sound "rich" and "vibrant" as well? If so, I wouldn't worry.

I play with 3/4 upper lip in the mouthpiece and have no problems with range or endurance, don't worry about what others say , if it works it works, I've worked with players who had their mouthpieces placed high,low, pointed up,down, and sideways who all sounded fine, use your ears not a mirror.

I wouldn't worry unless it's so extreme that your teacher thinks it's holding back your progress. How it looks on the outside doesn't always reflect the actuall amount of each lip IN the mouthpiece, and in any case, how it looks doesn't matter. There are many, MANY fine players with the mpc more on the top.

This may be of some interest:
[ame=http://www.youtube.com/watch?v=WVvq5wWlnLc]YouTube - The Brass Embouchure and Air Stream Direction[/ame]

Some Q&A . Great advice and descriptions. Thanks Dave Wilkin (Hope spelling is correct).
[ame=http://www.youtube.com/watch?v=0AIcWyTP6Xc&feature=related]YouTube - Embouchure Questions and Comments[/ame]

I knew I had the spelling wrong: Thanks David Wilken.

eeeew,....shave that caterpillar!

Do you have a trumpet teacher? there are a number of factors in the vertical placement of the mpc on the lips. Everyone is difference and there is no one size fits all placement. As long as the rim does not sit on the red of the lips in vertical placement, go with what gives you the best results