Here are 3 tips that should help you perfect your Spanish pronunciation of 'imprimir':

• Break 'imprimir' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them.
• Record yourself saying 'imprimir' in full sentences, then watch yourself and listen. You'll be able to mark your mistakes quite easily.
• Look up tutorials on Youtube on how to pronounce 'imprimir'.

To further improve Spanish pronunciation, we suggest you do the following:

• Learn the five basic vowel sounds: unlike English vowels, each Spanish vowel has exactly one sound: A is pronounced like the “a” in ‘”Taco”. E is pronounced like the “a” in “ate”. I is pronounced like the “ee” in “see”. O is pronounced like the “o” in “go”. U is pronounced like the “oo” in “shampoo”. More explanation here or here.
• Soften your T’s and D’s: the Spanish ‘T' and ‘D' are pronounced with your tongue slightly further forward in your mouth, almost touching your upper teeth. More explanation here or here.
• Soft R v.s Roller R: Soft R is pronounced like a normal R. It occurs when a single 'r' is in the middle or at the end of a word. Examples: pera, pero, cara, poro, tirar, pasar.  Rolling 'r' sounds like the "r" in "rat" or "rocket", stronger and vibrating. It occurs when the R is at the start of a word or when it’s a double r ('rr') in the middle of a word or when following 'n' or 'r' in the middle of a word. Examples: rosa, rata, roca, perro, tarro, urraca, enrosca, alrededor.  More explanation here, here and here
• Learn to use contractions: when the last letter of one word is the same as the first letter of the next word. For example, the phrase “tres semanas” (three weeks) would sound more like “tresemanas.
• Subscribe to 1 or more Spanish teaching channels on Youtube: it's free and it covers the core topics of the Spanish language. Check out Holly and Ana channels to name just a few.