You are free to do with the mod as you wish as long as you follow the terms below:

Allowed to do:

-You are allowed to use my mods in any of your Modpacks, asking me will get you ignored

-You are allowed to post my mods on other forums to be downloaded as long as you are NOT making money off of them

NOT allowed to do:

-You are not allowed to make any money of my mods

-You are not allowed to take any credit for the mods

-You are not allowed to Decompile the mod for the source code