hi jay jay and welcome. im afraid if you want to build muscle you will have to bump up the protein intake a bit. 10% is fine for general health and even cardio vascular exercise but it isnt as good for weight training if you want good results. its quite easy to get protein on a vegan diet whilst staying healthy though, have a look through peoples journals to get some ideas. there is all kinds of "rules" for protein intake such as 1g per lb of bodyweight, 1g per kilo of bodyweight and so on but i prefer to just make sure i have 5 high protein meals a day a couple of them being shakes. someone will stop by with more detail than this i would imagine but i dont like complicating my eating with numbers, hope this is of some help.