That's not bad at all if you ask me ! However there may be a few tiny mistakes...  ;) "Систра ме" should be "Сестра ми" and also is there any particular reason for not typing the names of the cities with capital letters? Like "вашингтон" or "америка". Also you can try using some sentences without subjects, it is quite common in Bulgarian. Like "Аз живея в младост близо до била." could easily be "Живея в Младост близо до Била."
And have you tried phonetic keyboard? I don't know if it will be easier for you but give it a try - the a is on the a key, the o is on the o key, the k is on the k key and so on. Of course there are some surprises but you can find them by yourself ;)