Hi there!
It's a nice start, here things I would suggest:
1) Bringing out the text in the top (with the little baseballs) is going to be difficult since the background image has very light and very dark areas. You're going down a good path, light text with a good dark shadow. A bolder font would help pick it off. You could also try darkening the background (i.e., covering it with a dark dark rectangle of color on another layer, and reducing the opacity-perhaps with Multiply as the blend mode.). This will tone the highlights way down and help pop your type even more-right now the background is very distracting since it's also doubling as the main image.
2) I would avoid setting that one line about employees in a smaller font, better to wrap it on two lines since you have the room. Right now it looks really forced, or worse, less important than the other bullets.
3) In the bottom left panel, I would flush that top paragraph left with the rest of the text-unless you intend to add something into the hole there.
4) Same issue with the background as before in that same panel-I wouldn't think you need the art there-particularly since there's an empty one right next to it above the glove (will text be going in there too?)
5) The font for "Play with a Champion" looks like it's skewed to fake an italic-I would try to use a real italic or a different font. I think you could have some more fun with that font seeing as it's the headline, be creative! Some more color there might be good too.
One more thing, I see that this is for a brochure. I'm not sure of your final size or reproduction plans. However, I would recommend that you set the text in a page layout program such as InDesign if you can, rather than doing it in Photoshop.
The reason is that if you do the text in Photoshop it will render at 300 dpi (or whatever you have your image size set at). For small reversed text like you have, that can be bad news (it could end up being fuzzy looking). Better to set the text in InDesign and let the imagesetter render at it's optimal super high dpi as it's meant to be rendered, you'll get much better results (plus it will be easier to format and edit-Photoshop has nice text tools but they're not really geared to intense typesetting needs-and I see you have a lot of tabs and columns working here).
I would keep the headlines in Photoshop since you are applying some effects to them-text that big isn't a problem. It's the little nubbins you have to worry about!
Good luck-can't wait to see the next step!
