Request Image Conversion/Compression Request

I've gotten back into Birth by Sleep modding and have begun to work on a custom texture for Aqua. However, I've been having trouble getting the file size for the *.tm2 correct. It needs to be 65 kb and for some reason always to come out of the conversion as large as 256 kb.

My conversion process, by the way, consists of pasting the PNG into a tm2 supporting program and saving as a tm2 file with the same parameters as the original texture.

Anyway, can somebody convert this picture to a 65 kb or smaller tm2 picture? I'd appreciate it quite a bit. It doesn't necessarily have to retain the quality, but it does need to at least look similar so the textures will map properly onto the model. It also needs to be a 32bit tm2 and the alignment needs to be 16 bytes, again so it will map correctly. I can also upload the original tm2 if necessary. Thanks in advance.


Oh, and you could tell me how you did this so I won't make requests like this in the future, I'll be thankful forever.

 

~Locked at request of owner upon solving it.