OK, I'll ask what everyone is dancing around. You do know the model needs to be balanced in the fore / aft direction? And do you know where it needs to balance? i.e. the CG (or CoG).
That said and assuming you know. Nose heavy models are usually balanced by adding weight to the tail if it's not too much. The tail being longer has an advantage where one ounce could offset as much as 5 ounces in the nose. Reducing weight from the nose helps but is often limited by the need to keep a strong motor connection to the rest of the model. You do not want to weaken the structure. With electric you can start by moving the motor battery and ESC back as far as there is room and wires allow. Do not add wire to the motor circuit. Some people find it helpful to stick their tail servos in the tail making the added weight functional. Of course all this is easier to do while building the model vice after it's built.