I'm not a programmer so it's difficult to understand this without seeing a proper mathematical description of the encryption and decryption methods.
If it uses elliptic curves then I doubt if you have reinvented EIGamal crypto system.
There are hybrid cryptosystems based on elliptic curves such as ECIES but the plain text is not required to be a point on the curve.
 The problems of using elliptic curve implementations of EIGamal rather than discrete logarithm implementations relate to message expansion factors and difficulties of deterministically generating points on the curve which is why hybrid solution such as ECIES are used.
 Generally I would say that home made crypto systems should be approached with caution. There are plenty of good crypto systems out there.