As a native Russian speaker, you may tend to not move your mouth when speaking English as much as American English speakers do. Your lips may be flatter and your teeth closer together. Americans move their lips quite a bit when speaking. Speaking Your Best will teach you how to move your mouth correctly to pronounce specific sounds and how it will improve your speech.
Russian sounds are generally pronounced more harshly than American English sounds. This means that you use more force to say them. American English sounds, in comparison, are pronounced more lightly, using less force. In addition, you naturally have difficulty pronouncing some American English sounds because you don't have these sounds in Russian. Learn which sounds will make the biggest difference in your accent and how to pronounce them in American English. Once you learn the sounds that impact your spoken English most, you will find that this reduces your accent by significantly. These are the sounds Speaking Your Best will teach you first.