Hello,
1. Please upload logo images in size appropriate to your needs. Logo max width can be changed in Theme Options > Header > Logo.
2. Select desired Header type in Theme Options > Header > Header layout.
3. Shopping cart icon you can change in Theme Options > Header > Header layout.
To change size of the icon add this code in Theme Options > Custom css:
.navbar-header .cart-bag:before, .navbar-header i, .navbar-header .my-account-link a:before, .navbar-header .login-link a:before, .header-search i {
font-size: 20px;
}
4. It is possible to change cart icon or mobile menu icon to anything else via additional customization.
xstore/headers/(your-type-header).php
http://prntscr.com/lam36j – navbar-toggle ->
Please make changes via child theme.
Feel free to ask if you have any other questions.
Regards