Ghazanfar - that would depend on what you mean by a 'review' paper? There are many different forms - although there is cross-over with some of the terms used. A review paper could be a simple literature review (perhaps a conceptual review), an integrative review, a systematic review (which might also be a meta-analysis) - or it may be a review as an evaluation of existing research studies. Invited papers, such as editorials, can also be considered as a form of review.
There are common 'traits' that overarch all these different types of reviews; the most common one being a systematic search of the literature in appropriate bibliographic databases and a critical and rigorous appraisal of that final corpus of collected literature.
The attached chapter may assist - as it mainly covers those processes - and also identifies common types of different reviews.
I am looking over the possible practices of review paper about an evaluation of existing research studies e.g. current evaluation in Medical Image Processing.
No problem Ghazanfar. If those practices are essentially primary clinical trials of MIP - then it sounds like you are looking more to a Cochrane-style systematic review and/or meta-analysis - but that would depend on the levels of evidence and their methodologies.
Good. At first take more than 100 published recent articles (may be more) in the same field in which you are interested to write a review. Read carefully the collected literature and analyse chapter-wise. In review, introduction and conclusion is most important. So make it in last. And finalize......