I find it Really Sad when people are This Disappointed with their photos and correspondence. I mean Honestly; think about it... there surely is a better solution than exploding them!!
But if you are determined to blow them away.... then I suggest that you don't use explosives like C4 unless you have advised the Fire Dept of your intentions.
Maybe; someone will write you something nice and attach a better picture in the meantime.
Don't dispair.... you know perhaps if you had the right computer program, you could alter or improve them manually... then you wouldn't feel a need to be so hard on yourself or blow them up. Good Luck.