Creationists recognize that similarity sometimes does indicate close relationship, but not always. For example, why do identical twins look so much alike? Obviously it is because they are closely related. On the other hand, there are other people who look very much alike who are not closely related at all. Even two brothers from the same family can look quite different! Thus creationists believe that similarity and resemblance does not always indicate close relationship.
Some light bulbs are made in almost the same shape as eggs! They may be similar in appearance, but does this mean that eggs and light bulbs are related? The atom resembles our SOLAR SYSTEM (electrons orbit around the nucleus of an atom just as planets orbit around the nucleus of our solar system, which is the sun). Does this mean that our solar system evolved from an atom? Can you think of some ways in which airplanes are similar to birds? Does this mean that airplanes evolved from birds?