Nice name ;-) محمّد I'll rewrite your question then I’ll give my answer: You can pronounce it “Muhammad “ the "ha" hasn't a similar sound in English . And the “ ّ “makes the letter below it stronger, like you are pronouncing this letter 2times but continuously :-)

محمد

in arabic u write it "محمد" and you pronouce it MOUhamed but not exactly u must hear how to pronouce it right coz some arabic letters have not synonymous in english.