I like the ideas of the photos and think that they should do well once they are touched up a bit.
I don't particularly care for the arrow. I don't know why, but it just bothers me. Maybe because the arrow is leading my eye out of the picture frame and away from the subject. I would suggest just circling the area without the arrow.
The last photo has a Texas Instruments logo and needs to be removed.
Also, the paper looks a little blue. You might want to check the white balance on the photos.
Hope that helps...