Signing an APK

[rustypixel]

I don't know if this is the right forum for this but I'll throw it out there. I'm trying to install the Gmail.apk that I edited to change the email notification icon but it will not install. I'm assuming it's cause I didn't sign it. I'm at work and I tried reading up on signing APKs but it's a bit too complicated for me for what I want to do. Is there anyone here willing to sign the APK for me if I send it to them?

Thanks.