The nickel is wierd looking....pennies...there is a filled in D and the other penny has wierd coloration.
I guess you are using a scanner there. You might want to increase the resolution so that it would appear bigger. Hopefully that should do the trick unless you have an unusually old scanner.
You should select only the portion where the coin is located. An image with less than 4.25" x 4.25" in area , having about 100 Resolution will be less than 100 kb in size.. It will give the optimum picture..
the 1982 cent just looks shiny. the doubled mintmarks are not doubled enough to be worth much. also, i have a few nickels that are so worn the memorial building looks like that. all common. keep the pre 1982 cenns and pre 1965 nickels though. try to get some larger pictures! oh, and also, try scanning one coin at a time and zoom in on it. that should help.
