你好

你好，我叫Sarah (we can translate it to 莎拉 in Chinese)。 我 正在 学习中文。 我 和我的先生、我们的儿子一起住在英国 也 我 的 先 生 和 我 们 的 儿 子。我（今年）三十六岁。 我为客户工作 (sorry I didn't undestand it. Do you mean you are working for your customer or you are working in an apartment?)。我在家工作,有时我也在去办公室山上班。你做什么工作？再见。

In pinyin, 山=shan, 上=shang

if you don't use "-g" in the end of ’上', it would probably be confusing.

but okay, many Chinese native speaker with accent will also make this mistake.

glad to help you.